21205528

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{3803}}^1$

素因数の和:3867

約数の個数: 32

約数和(自身を含む): 43137360

約数和(自身を除く): 21931832

約数列:

[1, 2, 4, 8, 17, 34, 41, 68, 82, 136, 164, 328, 697, 1394, 2788, 3803, 5576, 7606, 15212, 30424, 64651, 129302, 155923, 258604, 311846, 517208, 623692, 1247384, 2650691, 5301382, 10602764, 21205528]

約数ペア:

[(1, 21205528), (2, 10602764), (4, 5301382), (8, 2650691), (17, 1247384), (34, 623692), (41, 517208), (68, 311846), (82, 258604), (136, 155923), (164, 129302), (328, 64651), (697, 30424), (1394, 15212), (2788, 7606), (3803, 5576)]