438020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{181}}^1$

素因数の和:212

約数の個数: 36

約数和(自身を含む): 1016652

約数和(自身を除く): 578632

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 181, 220, 242, 362, 484, 605, 724, 905, 1210, 1810, 1991, 2420, 3620, 3982, 7964, 9955, 19910, 21901, 39820, 43802, 87604, 109505, 219010, 438020]

約数ペア:

[(1, 438020), (2, 219010), (4, 109505), (5, 87604), (10, 43802), (11, 39820), (20, 21901), (22, 19910), (44, 9955), (55, 7964), (110, 3982), (121, 3620), (181, 2420), (220, 1991), (242, 1810), (362, 1210), (484, 905), (605, 724)]