20188750

素因数分解:

$2^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:574

約数の個数: 40

約数和(自身を含む): 39137472

約数和(自身を除く): 18948722

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 250, 310, 521, 625, 775, 1042, 1250, 1550, 2605, 3875, 5210, 7750, 13025, 16151, 19375, 26050, 32302, 38750, 65125, 80755, 130250, 161510, 325625, 403775, 651250, 807550, 2018875, 4037750, 10094375, 20188750]

約数ペア:

[(1, 20188750), (2, 10094375), (5, 4037750), (10, 2018875), (25, 807550), (31, 651250), (50, 403775), (62, 325625), (125, 161510), (155, 130250), (250, 80755), (310, 65125), (521, 38750), (625, 32302), (775, 26050), (1042, 19375), (1250, 16151), (1550, 13025), (2605, 7750), (3875, 5210)]