64432880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25981}}^1$

素因数の和:26025

約数の個数: 40

約数和(自身を含む): 154644864

約数和(自身を除く): 90211984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 25981, 51962, 103924, 129905, 207848, 259810, 415696, 519620, 805411, 1039240, 1610822, 2078480, 3221644, 4027055, 6443288, 8054110, 12886576, 16108220, 32216440, 64432880]

約数ペア:

[(1, 64432880), (2, 32216440), (4, 16108220), (5, 12886576), (8, 8054110), (10, 6443288), (16, 4027055), (20, 3221644), (31, 2078480), (40, 1610822), (62, 1039240), (80, 805411), (124, 519620), (155, 415696), (248, 259810), (310, 207848), (496, 129905), (620, 103924), (1240, 51962), (2480, 25981)]