319150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:516

約数の個数: 24

約数和(自身を含む): 640584

約数和(自身を除く): 321434

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 491, 650, 982, 2455, 4910, 6383, 12275, 12766, 24550, 31915, 63830, 159575, 319150]

約数ペア:

[(1, 319150), (2, 159575), (5, 63830), (10, 31915), (13, 24550), (25, 12766), (26, 12275), (50, 6383), (65, 4910), (130, 2455), (325, 982), (491, 650)]