66943880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53987}}^1$

素因数の和:54029

約数の個数: 32

約数和(自身を含む): 155485440

約数和(自身を除く): 88541560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 53987, 107974, 215948, 269935, 431896, 539870, 1079740, 1673597, 2159480, 3347194, 6694388, 8367985, 13388776, 16735970, 33471940, 66943880]

約数ペア:

[(1, 66943880), (2, 33471940), (4, 16735970), (5, 13388776), (8, 8367985), (10, 6694388), (20, 3347194), (31, 2159480), (40, 1673597), (62, 1079740), (124, 539870), (155, 431896), (248, 269935), (310, 215948), (620, 107974), (1240, 53987)]