640295250

素因数分解:

$2^1\times 3^1\times 5^3\times 7^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:191

約数の個数: 256

約数和(自身を含む): 1976832000

約数和(自身を除く): 1336536750

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 25, 30, 35, 38, 42, 49, 50, 57, 70, 75, 95, 98, 105, 114, 125, 131, 133, 147, 150, 175, 190, 210, 245, 250, 262, 266, 285, 294, 343, 350, 375, 393, 399, 475, 490, 525, 570, 655, 665, 686, 735, 750, 786, 798, 875, 917, 931, 950, 1029, 1050, 1225, 1310, 1330, 1425, 1470, 1715, 1750, 1834, 1862, 1965, 1995, 2058, 2375, 2450, 2489, 2625, 2751, 2793, 2850, 3275, 3325, 3430, 3675, 3930, 3990, 4585, 4655, 4750, 4978, 5145, 5250, 5502, 5586, 6125, 6419, 6517, 6550, 6650, 7125, 7350, 7467, 8575, 9170, 9310, 9825, 9975, 10290, 12250, 12445, 12838, 13034, 13755, 13965, 14250, 14934, 16375, 16625, 17150, 17423, 18375, 19257, 19551, 19650, 19950, 22925, 23275, 24890, 25725, 27510, 27930, 32095, 32585, 32750, 33250, 34846, 36750, 37335, 38514, 39102, 42875, 44933, 45850, 46550, 49125, 49875, 51450, 52269, 62225, 64190, 65170, 68775, 69825, 74670, 85750, 87115, 89866, 96285, 97755, 98250, 99750, 104538, 114625, 116375, 121961, 124450, 128625, 134799, 137550, 139650, 160475, 162925, 174230, 186675, 192570, 195510, 224665, 229250, 232750, 243922, 257250, 261345, 269598, 311125, 320950, 325850, 343875, 349125, 365883, 373350, 435575, 449330, 481425, 488775, 522690, 609805, 622250, 673995, 687750, 698250, 731766, 802375, 814625, 853727, 871150, 933375, 962850, 977550, 1123325, 1219610, 1306725, 1347990, 1604750, 1629250, 1707454, 1829415, 1866750, 2177875, 2246650, 2407125, 2443875, 2561181, 2613450, 3049025, 3369975, 3658830, 4268635, 4355750, 4814250, 4887750, 5122362, 5616625, 6098050, 6533625, 6739950, 8537270, 9147075, 11233250, 12805905, 13067250, 15245125, 16849875, 18294150, 21343175, 25611810, 30490250, 33699750, 42686350, 45735375, 64029525, 91470750, 106715875, 128059050, 213431750, 320147625, 640295250]

約数ペア:

[(1, 640295250), (2, 320147625), (3, 213431750), (5, 128059050), (6, 106715875), (7, 91470750), (10, 64029525), (14, 45735375), (15, 42686350), (19, 33699750), (21, 30490250), (25, 25611810), (30, 21343175), (35, 18294150), (38, 16849875), (42, 15245125), (49, 13067250), (50, 12805905), (57, 11233250), (70, 9147075), (75, 8537270), (95, 6739950), (98, 6533625), (105, 6098050), (114, 5616625), (125, 5122362), (131, 4887750), (133, 4814250), (147, 4355750), (150, 4268635), (175, 3658830), (190, 3369975), (210, 3049025), (245, 2613450), (250, 2561181), (262, 2443875), (266, 2407125), (285, 2246650), (294, 2177875), (343, 1866750), (350, 1829415), (375, 1707454), (393, 1629250), (399, 1604750), (475, 1347990), (490, 1306725), (525, 1219610), (570, 1123325), (655, 977550), (665, 962850), (686, 933375), (735, 871150), (750, 853727), (786, 814625), (798, 802375), (875, 731766), (917, 698250), (931, 687750), (950, 673995), (1029, 622250), (1050, 609805), (1225, 522690), (1310, 488775), (1330, 481425), (1425, 449330), (1470, 435575), (1715, 373350), (1750, 365883), (1834, 349125), (1862, 343875), (1965, 325850), (1995, 320950), (2058, 311125), (2375, 269598), (2450, 261345), (2489, 257250), (2625, 243922), (2751, 232750), (2793, 229250), (2850, 224665), (3275, 195510), (3325, 192570), (3430, 186675), (3675, 174230), (3930, 162925), (3990, 160475), (4585, 139650), (4655, 137550), (4750, 134799), (4978, 128625), (5145, 124450), (5250, 121961), (5502, 116375), (5586, 114625), (6125, 104538), (6419, 99750), (6517, 98250), (6550, 97755), (6650, 96285), (7125, 89866), (7350, 87115), (7467, 85750), (8575, 74670), (9170, 69825), (9310, 68775), (9825, 65170), (9975, 64190), (10290, 62225), (12250, 52269), (12445, 51450), (12838, 49875), (13034, 49125), (13755, 46550), (13965, 45850), (14250, 44933), (14934, 42875), (16375, 39102), (16625, 38514), (17150, 37335), (17423, 36750), (18375, 34846), (19257, 33250), (19551, 32750), (19650, 32585), (19950, 32095), (22925, 27930), (23275, 27510), (24890, 25725)]