68709640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{55411}}^1$

素因数の和:55453

約数の個数: 32

約数和(自身を含む): 159586560

約数和(自身を除く): 90876920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 55411, 110822, 221644, 277055, 443288, 554110, 1108220, 1717741, 2216440, 3435482, 6870964, 8588705, 13741928, 17177410, 34354820, 68709640]

約数ペア:

[(1, 68709640), (2, 34354820), (4, 17177410), (5, 13741928), (8, 8588705), (10, 6870964), (20, 3435482), (31, 2216440), (40, 1717741), (62, 1108220), (124, 554110), (155, 443288), (248, 277055), (310, 221644), (620, 110822), (1240, 55411)]