885909140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{541}}^1\times {\mathrm{1997}}^1$

素因数の和:2588

約数の個数: 48

約数和(自身を含む): 1910263824

約数和(自身を除く): 1024354684

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 541, 820, 1082, 1997, 2164, 2705, 3994, 5410, 7988, 9985, 10820, 19970, 22181, 39940, 44362, 81877, 88724, 110905, 163754, 221810, 327508, 409385, 443620, 818770, 1080377, 1637540, 2160754, 4321508, 5401885, 10803770, 21607540, 44295457, 88590914, 177181828, 221477285, 442954570, 885909140]

約数ペア:

[(1, 885909140), (2, 442954570), (4, 221477285), (5, 177181828), (10, 88590914), (20, 44295457), (41, 21607540), (82, 10803770), (164, 5401885), (205, 4321508), (410, 2160754), (541, 1637540), (820, 1080377), (1082, 818770), (1997, 443620), (2164, 409385), (2705, 327508), (3994, 221810), (5410, 163754), (7988, 110905), (9985, 88724), (10820, 81877), (19970, 44362), (22181, 39940)]