20217250

素因数分解:

$2^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 41243904

約数和(自身を除く): 21026654

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 67, 71, 85, 125, 134, 142, 170, 250, 335, 355, 425, 670, 710, 850, 1139, 1207, 1675, 1775, 2125, 2278, 2414, 3350, 3550, 4250, 4757, 5695, 6035, 8375, 8875, 9514, 11390, 12070, 16750, 17750, 23785, 28475, 30175, 47570, 56950, 60350, 80869, 118925, 142375, 150875, 161738, 237850, 284750, 301750, 404345, 594625, 808690, 1189250, 2021725, 4043450, 10108625, 20217250]

約数ペア:

[(1, 20217250), (2, 10108625), (5, 4043450), (10, 2021725), (17, 1189250), (25, 808690), (34, 594625), (50, 404345), (67, 301750), (71, 284750), (85, 237850), (125, 161738), (134, 150875), (142, 142375), (170, 118925), (250, 80869), (335, 60350), (355, 56950), (425, 47570), (670, 30175), (710, 28475), (850, 23785), (1139, 17750), (1207, 16750), (1675, 12070), (1775, 11390), (2125, 9514), (2278, 8875), (2414, 8375), (3350, 6035), (3550, 5695), (4250, 4757)]