21556712

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{419}}^1$

素因数の和:593

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20023288

約数列:

[1, 2, 4, 8, 59, 109, 118, 218, 236, 419, 436, 472, 838, 872, 1676, 3352, 6431, 12862, 24721, 25724, 45671, 49442, 51448, 91342, 98884, 182684, 197768, 365368, 2694589, 5389178, 10778356, 21556712]

約数ペア:

[(1, 21556712), (2, 10778356), (4, 5389178), (8, 2694589), (59, 365368), (109, 197768), (118, 182684), (218, 98884), (236, 91342), (419, 51448), (436, 49442), (472, 45671), (838, 25724), (872, 24721), (1676, 12862), (3352, 6431)]