21054508

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{449}}^1\times {\mathrm{617}}^1$

素因数の和:1089

約数の個数: 24

約数和(自身を含む): 38934000

約数和(自身を除く): 17879492

約数列:

[1, 2, 4, 19, 38, 76, 449, 617, 898, 1234, 1796, 2468, 8531, 11723, 17062, 23446, 34124, 46892, 277033, 554066, 1108132, 5263627, 10527254, 21054508]

約数ペア:

[(1, 21054508), (2, 10527254), (4, 5263627), (19, 1108132), (38, 554066), (76, 277033), (449, 46892), (617, 34124), (898, 23446), (1234, 17062), (1796, 11723), (2468, 8531)]