21320250

素因数分解:

$2^1\times 3^1\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:189

約数の個数: 128

約数和(自身を含む): 63258624

約数和(自身を除く): 41938374

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 31, 35, 42, 50, 62, 70, 75, 93, 105, 125, 131, 150, 155, 175, 186, 210, 217, 250, 262, 310, 350, 375, 393, 434, 465, 525, 651, 655, 750, 775, 786, 875, 917, 930, 1050, 1085, 1302, 1310, 1550, 1750, 1834, 1965, 2170, 2325, 2625, 2751, 3255, 3275, 3875, 3930, 4061, 4585, 4650, 5250, 5425, 5502, 6510, 6550, 7750, 8122, 9170, 9825, 10850, 11625, 12183, 13755, 16275, 16375, 19650, 20305, 22925, 23250, 24366, 27125, 27510, 28427, 32550, 32750, 40610, 45850, 49125, 54250, 56854, 60915, 68775, 81375, 85281, 98250, 101525, 114625, 121830, 137550, 142135, 162750, 170562, 203050, 229250, 284270, 304575, 343875, 426405, 507625, 609150, 687750, 710675, 852810, 1015250, 1421350, 1522875, 2132025, 3045750, 3553375, 4264050, 7106750, 10660125, 21320250]

約数ペア:

[(1, 21320250), (2, 10660125), (3, 7106750), (5, 4264050), (6, 3553375), (7, 3045750), (10, 2132025), (14, 1522875), (15, 1421350), (21, 1015250), (25, 852810), (30, 710675), (31, 687750), (35, 609150), (42, 507625), (50, 426405), (62, 343875), (70, 304575), (75, 284270), (93, 229250), (105, 203050), (125, 170562), (131, 162750), (150, 142135), (155, 137550), (175, 121830), (186, 114625), (210, 101525), (217, 98250), (250, 85281), (262, 81375), (310, 68775), (350, 60915), (375, 56854), (393, 54250), (434, 49125), (465, 45850), (525, 40610), (651, 32750), (655, 32550), (750, 28427), (775, 27510), (786, 27125), (875, 24366), (917, 23250), (930, 22925), (1050, 20305), (1085, 19650), (1302, 16375), (1310, 16275), (1550, 13755), (1750, 12183), (1834, 11625), (1965, 10850), (2170, 9825), (2325, 9170), (2625, 8122), (2751, 7750), (3255, 6550), (3275, 6510), (3875, 5502), (3930, 5425), (4061, 5250), (4585, 4650)]