21041250

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:237

約数の個数: 80

約数和(自身を含む): 54582528

約数和(自身を除く): 33541278

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 31, 50, 62, 75, 93, 125, 150, 155, 181, 186, 250, 310, 362, 375, 465, 543, 625, 750, 775, 905, 930, 1086, 1250, 1550, 1810, 1875, 2325, 2715, 3750, 3875, 4525, 4650, 5430, 5611, 7750, 9050, 11222, 11625, 13575, 16833, 19375, 22625, 23250, 27150, 28055, 33666, 38750, 45250, 56110, 58125, 67875, 84165, 113125, 116250, 135750, 140275, 168330, 226250, 280550, 339375, 420825, 678750, 701375, 841650, 1402750, 2104125, 3506875, 4208250, 7013750, 10520625, 21041250]

約数ペア:

[(1, 21041250), (2, 10520625), (3, 7013750), (5, 4208250), (6, 3506875), (10, 2104125), (15, 1402750), (25, 841650), (30, 701375), (31, 678750), (50, 420825), (62, 339375), (75, 280550), (93, 226250), (125, 168330), (150, 140275), (155, 135750), (181, 116250), (186, 113125), (250, 84165), (310, 67875), (362, 58125), (375, 56110), (465, 45250), (543, 38750), (625, 33666), (750, 28055), (775, 27150), (905, 23250), (930, 22625), (1086, 19375), (1250, 16833), (1550, 13575), (1810, 11625), (1875, 11222), (2325, 9050), (2715, 7750), (3750, 5611), (3875, 5430), (4525, 4650)]