31406180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{607}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 71500800

約数和(自身を除く): 40094620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 199, 260, 398, 607, 796, 995, 1214, 1990, 2428, 2587, 3035, 3980, 5174, 6070, 7891, 10348, 12140, 12935, 15782, 25870, 31564, 39455, 51740, 78910, 120793, 157820, 241586, 483172, 603965, 1207930, 1570309, 2415860, 3140618, 6281236, 7851545, 15703090, 31406180]

約数ペア:

[(1, 31406180), (2, 15703090), (4, 7851545), (5, 6281236), (10, 3140618), (13, 2415860), (20, 1570309), (26, 1207930), (52, 603965), (65, 483172), (130, 241586), (199, 157820), (260, 120793), (398, 78910), (607, 51740), (796, 39455), (995, 31564), (1214, 25870), (1990, 15782), (2428, 12935), (2587, 12140), (3035, 10348), (3980, 7891), (5174, 6070)]