20807850

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1$

素因数の和:197

約数の個数: 144

約数和(自身を含む): 63612000

約数和(自身を除く): 42804150

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, 133, 147, 149, 150, 175, 190, 210, 245, 266, 285, 294, 298, 350, 399, 447, 475, 490, 525, 570, 665, 735, 745, 798, 894, 931, 950, 1043, 1050, 1225, 1330, 1425, 1470, 1490, 1862, 1995, 2086, 2235, 2450, 2793, 2831, 2850, 3129, 3325, 3675, 3725, 3990, 4470, 4655, 5215, 5586, 5662, 6258, 6650, 7301, 7350, 7450, 8493, 9310, 9975, 10430, 11175, 13965, 14155, 14602, 15645, 16986, 19817, 19950, 21903, 22350, 23275, 26075, 27930, 28310, 31290, 36505, 39634, 42465, 43806, 46550, 52150, 59451, 69825, 70775, 73010, 78225, 84930, 99085, 109515, 118902, 138719, 139650, 141550, 156450, 182525, 198170, 212325, 219030, 277438, 297255, 365050, 416157, 424650, 495425, 547575, 594510, 693595, 832314, 990850, 1095150, 1387190, 1486275, 2080785, 2972550, 3467975, 4161570, 6935950, 10403925, 20807850]

約数ペア:

[(1, 20807850), (2, 10403925), (3, 6935950), (5, 4161570), (6, 3467975), (7, 2972550), (10, 2080785), (14, 1486275), (15, 1387190), (19, 1095150), (21, 990850), (25, 832314), (30, 693595), (35, 594510), (38, 547575), (42, 495425), (49, 424650), (50, 416157), (57, 365050), (70, 297255), (75, 277438), (95, 219030), (98, 212325), (105, 198170), (114, 182525), (133, 156450), (147, 141550), (149, 139650), (150, 138719), (175, 118902), (190, 109515), (210, 99085), (245, 84930), (266, 78225), (285, 73010), (294, 70775), (298, 69825), (350, 59451), (399, 52150), (447, 46550), (475, 43806), (490, 42465), (525, 39634), (570, 36505), (665, 31290), (735, 28310), (745, 27930), (798, 26075), (894, 23275), (931, 22350), (950, 21903), (1043, 19950), (1050, 19817), (1225, 16986), (1330, 15645), (1425, 14602), (1470, 14155), (1490, 13965), (1862, 11175), (1995, 10430), (2086, 9975), (2235, 9310), (2450, 8493), (2793, 7450), (2831, 7350), (2850, 7301), (3129, 6650), (3325, 6258), (3675, 5662), (3725, 5586), (3990, 5215), (4470, 4655)]