21305416

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1013}}^1$

素因数の和:1269

約数の個数: 32

約数和(自身を含む): 43804800

約数和(自身を除く): 22499384

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 239, 478, 956, 1013, 1912, 2026, 2629, 4052, 5258, 8104, 10516, 11143, 21032, 22286, 44572, 89144, 242107, 484214, 968428, 1936856, 2663177, 5326354, 10652708, 21305416]

約数ペア:

[(1, 21305416), (2, 10652708), (4, 5326354), (8, 2663177), (11, 1936856), (22, 968428), (44, 484214), (88, 242107), (239, 89144), (478, 44572), (956, 22286), (1013, 21032), (1912, 11143), (2026, 10516), (2629, 8104), (4052, 5258)]