21316625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:482

約数の個数: 32

約数和(自身を含む): 29877120

約数和(自身を除く): 8560495

約数列:

[1, 5, 11, 25, 37, 55, 125, 185, 275, 407, 419, 925, 1375, 2035, 2095, 4609, 4625, 10175, 10475, 15503, 23045, 50875, 52375, 77515, 115225, 170533, 387575, 576125, 852665, 1937875, 4263325, 21316625]

約数ペア:

[(1, 21316625), (5, 4263325), (11, 1937875), (25, 852665), (37, 576125), (55, 387575), (125, 170533), (185, 115225), (275, 77515), (407, 52375), (419, 50875), (925, 23045), (1375, 15503), (2035, 10475), (2095, 10175), (4609, 4625)]