2559980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4129}}^1$

素因数の和:4169

約数の個数: 24

約数和(自身を含む): 5550720

約数和(自身を除く): 2990740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 4129, 8258, 16516, 20645, 41290, 82580, 127999, 255998, 511996, 639995, 1279990, 2559980]

約数ペア:

[(1, 2559980), (2, 1279990), (4, 639995), (5, 511996), (10, 255998), (20, 127999), (31, 82580), (62, 41290), (124, 20645), (155, 16516), (310, 8258), (620, 4129)]