81812960

素因数分解:

$2^5\times 5^1\times {\mathrm{163}}^1\times {\mathrm{3137}}^1$

素因数の和:3315

約数の個数: 48

約数和(自身を含む): 194530896

約数和(自身を除く): 112717936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 163, 326, 652, 815, 1304, 1630, 2608, 3137, 3260, 5216, 6274, 6520, 12548, 13040, 15685, 25096, 26080, 31370, 50192, 62740, 100384, 125480, 250960, 501920, 511331, 1022662, 2045324, 2556655, 4090648, 5113310, 8181296, 10226620, 16362592, 20453240, 40906480, 81812960]

約数ペア:

[(1, 81812960), (2, 40906480), (4, 20453240), (5, 16362592), (8, 10226620), (10, 8181296), (16, 5113310), (20, 4090648), (32, 2556655), (40, 2045324), (80, 1022662), (160, 511331), (163, 501920), (326, 250960), (652, 125480), (815, 100384), (1304, 62740), (1630, 50192), (2608, 31370), (3137, 26080), (3260, 25096), (5216, 15685), (6274, 13040), (6520, 12548)]