20178036880

素因数分解:

$2^4\times 5^1\times {\mathrm{2791}}^1\times {\mathrm{90371}}^1$

素因数の和:93175

約数の個数: 40

約数和(自身を含む): 46931264064

約数和(自身を除く): 26753227184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2791, 5582, 11164, 13955, 22328, 27910, 44656, 55820, 90371, 111640, 180742, 223280, 361484, 451855, 722968, 903710, 1445936, 1807420, 3614840, 7229680, 252225461, 504450922, 1008901844, 1261127305, 2017803688, 2522254610, 4035607376, 5044509220, 10089018440, 20178036880]

約数ペア:

[(1, 20178036880), (2, 10089018440), (4, 5044509220), (5, 4035607376), (8, 2522254610), (10, 2017803688), (16, 1261127305), (20, 1008901844), (40, 504450922), (80, 252225461), (2791, 7229680), (5582, 3614840), (11164, 1807420), (13955, 1445936), (22328, 903710), (27910, 722968), (44656, 451855), (55820, 361484), (90371, 223280), (111640, 180742)]