1990625

素因数分解:

$5^5\times 7^2\times {\mathrm{13}}^1$

素因数の和:52

約数の個数: 36

約数和(自身を含む): 3116988

約数和(自身を除く): 1126363

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 125, 175, 245, 325, 455, 625, 637, 875, 1225, 1625, 2275, 3125, 3185, 4375, 6125, 8125, 11375, 15925, 21875, 30625, 40625, 56875, 79625, 153125, 284375, 398125, 1990625]

約数ペア:

[(1, 1990625), (5, 398125), (7, 284375), (13, 153125), (25, 79625), (35, 56875), (49, 40625), (65, 30625), (91, 21875), (125, 15925), (175, 11375), (245, 8125), (325, 6125), (455, 4375), (625, 3185), (637, 3125), (875, 2275), (1225, 1625)]