15860840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12791}}^1$

素因数の和:12833

約数の個数: 32

約数和(自身を含む): 36840960

約数和(自身を除く): 20980120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 12791, 25582, 51164, 63955, 102328, 127910, 255820, 396521, 511640, 793042, 1586084, 1982605, 3172168, 3965210, 7930420, 15860840]

約数ペア:

[(1, 15860840), (2, 7930420), (4, 3965210), (5, 3172168), (8, 1982605), (10, 1586084), (20, 793042), (31, 511640), (40, 396521), (62, 255820), (124, 127910), (155, 102328), (248, 63955), (310, 51164), (620, 25582), (1240, 12791)]