1279990

素因数分解:

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

素因数の和:4167

約数の個数: 16

約数和(自身を含む): 2378880

約数和(自身を除く): 1098890

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 4129, 8258, 20645, 41290, 127999, 255998, 639995, 1279990]

約数ペア:

[(1, 1279990), (2, 639995), (5, 255998), (10, 127999), (31, 41290), (62, 20645), (155, 8258), (310, 4129)]