40379980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65129}}^1$

素因数の和:65169

約数の個数: 24

約数和(自身を含む): 87534720

約数和(自身を除く): 47154740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 65129, 130258, 260516, 325645, 651290, 1302580, 2018999, 4037998, 8075996, 10094995, 20189990, 40379980]

約数ペア:

[(1, 40379980), (2, 20189990), (4, 10094995), (5, 8075996), (10, 4037998), (20, 2018999), (31, 1302580), (62, 651290), (124, 325645), (155, 260516), (310, 130258), (620, 65129)]