18131860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3137}}^1$

素因数の和:3180

約数の個数: 36

約数和(自身を含む): 40461372

約数和(自身を除く): 22329512

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3137, 5780, 6274, 12548, 15685, 31370, 53329, 62740, 106658, 213316, 266645, 533290, 906593, 1066580, 1813186, 3626372, 4532965, 9065930, 18131860]

約数ペア:

[(1, 18131860), (2, 9065930), (4, 4532965), (5, 3626372), (10, 1813186), (17, 1066580), (20, 906593), (34, 533290), (68, 266645), (85, 213316), (170, 106658), (289, 62740), (340, 53329), (578, 31370), (1156, 15685), (1445, 12548), (2890, 6274), (3137, 5780)]