21116420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{337}}^1$

素因数の和:600

約数の個数: 48

約数和(自身を含む): 48096048

約数和(自身を除く): 26979628

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 241, 260, 337, 482, 674, 964, 1205, 1348, 1685, 2410, 3133, 3370, 4381, 4820, 6266, 6740, 8762, 12532, 15665, 17524, 21905, 31330, 43810, 62660, 81217, 87620, 162434, 324868, 406085, 812170, 1055821, 1624340, 2111642, 4223284, 5279105, 10558210, 21116420]

約数ペア:

[(1, 21116420), (2, 10558210), (4, 5279105), (5, 4223284), (10, 2111642), (13, 1624340), (20, 1055821), (26, 812170), (52, 406085), (65, 324868), (130, 162434), (241, 87620), (260, 81217), (337, 62660), (482, 43810), (674, 31330), (964, 21905), (1205, 17524), (1348, 15665), (1685, 12532), (2410, 8762), (3133, 6740), (3370, 6266), (4381, 4820)]