12998375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:468

約数の個数: 32

約数和(自身を含む): 18432960

約数和(自身を除く): 5434585

約数列:

[1, 5, 13, 19, 25, 65, 95, 125, 247, 325, 421, 475, 1235, 1625, 2105, 2375, 5473, 6175, 7999, 10525, 27365, 30875, 39995, 52625, 103987, 136825, 199975, 519935, 684125, 999875, 2599675, 12998375]

約数ペア:

[(1, 12998375), (5, 2599675), (13, 999875), (19, 684125), (25, 519935), (65, 199975), (95, 136825), (125, 103987), (247, 52625), (325, 39995), (421, 30875), (475, 27365), (1235, 10525), (1625, 7999), (2105, 6175), (2375, 5473)]