20122375

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:125

約数の個数: 64

約数和(自身を含む): 32497920

約数和(自身を除く): 12375545

約数列:

[1, 5, 7, 13, 25, 29, 35, 61, 65, 91, 125, 145, 175, 203, 305, 325, 377, 427, 455, 725, 793, 875, 1015, 1525, 1625, 1769, 1885, 2135, 2275, 2639, 3625, 3965, 5075, 5551, 7625, 8845, 9425, 10675, 11375, 12383, 13195, 19825, 22997, 25375, 27755, 44225, 47125, 53375, 61915, 65975, 99125, 114985, 138775, 160979, 221125, 309575, 329875, 574925, 693875, 804895, 1547875, 2874625, 4024475, 20122375]

約数ペア:

[(1, 20122375), (5, 4024475), (7, 2874625), (13, 1547875), (25, 804895), (29, 693875), (35, 574925), (61, 329875), (65, 309575), (91, 221125), (125, 160979), (145, 138775), (175, 114985), (203, 99125), (305, 65975), (325, 61915), (377, 53375), (427, 47125), (455, 44225), (725, 27755), (793, 25375), (875, 22997), (1015, 19825), (1525, 13195), (1625, 12383), (1769, 11375), (1885, 10675), (2135, 9425), (2275, 8845), (2639, 7625), (3625, 5551), (3965, 5075)]