19571620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 43319808

約数和(自身を除く): 23748188

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 157, 230, 271, 314, 460, 542, 628, 785, 1084, 1355, 1570, 2710, 3140, 3611, 5420, 6233, 7222, 12466, 14444, 18055, 24932, 31165, 36110, 42547, 62330, 72220, 85094, 124660, 170188, 212735, 425470, 850940, 978581, 1957162, 3914324, 4892905, 9785810, 19571620]

約数ペア:

[(1, 19571620), (2, 9785810), (4, 4892905), (5, 3914324), (10, 1957162), (20, 978581), (23, 850940), (46, 425470), (92, 212735), (115, 170188), (157, 124660), (230, 85094), (271, 72220), (314, 62330), (460, 42547), (542, 36110), (628, 31165), (785, 24932), (1084, 18055), (1355, 14444), (1570, 12466), (2710, 7222), (3140, 6233), (3611, 5420)]