20759375

素因数分解:

$5^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1$

素因数の和:118

約数の個数: 48

約数和(自身を含む): 32372928

約数和(自身を除く): 11613553

約数列:

[1, 5, 7, 13, 25, 35, 65, 73, 91, 125, 175, 325, 365, 455, 511, 625, 875, 949, 1625, 1825, 2275, 2555, 3125, 4375, 4745, 6643, 8125, 9125, 11375, 12775, 21875, 23725, 33215, 40625, 45625, 56875, 63875, 118625, 166075, 228125, 284375, 319375, 593125, 830375, 1596875, 2965625, 4151875, 20759375]

約数ペア:

[(1, 20759375), (5, 4151875), (7, 2965625), (13, 1596875), (25, 830375), (35, 593125), (65, 319375), (73, 284375), (91, 228125), (125, 166075), (175, 118625), (325, 63875), (365, 56875), (455, 45625), (511, 40625), (625, 33215), (875, 23725), (949, 21875), (1625, 12775), (1825, 11375), (2275, 9125), (2555, 8125), (3125, 6643), (4375, 4745)]