128353640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103511}}^1$

素因数の和:103553

約数の個数: 32

約数和(自身を含む): 298114560

約数和(自身を除く): 169760920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 103511, 207022, 414044, 517555, 828088, 1035110, 2070220, 3208841, 4140440, 6417682, 12835364, 16044205, 25670728, 32088410, 64176820, 128353640]

約数ペア:

[(1, 128353640), (2, 64176820), (4, 32088410), (5, 25670728), (8, 16044205), (10, 12835364), (20, 6417682), (31, 4140440), (40, 3208841), (62, 2070220), (124, 1035110), (155, 828088), (248, 517555), (310, 414044), (620, 207022), (1240, 103511)]