387640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{881}}^1$

素因数の和:903

約数の個数: 32

約数和(自身を含む): 952560

約数和(自身を除く): 564920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 881, 1762, 3524, 4405, 7048, 8810, 9691, 17620, 19382, 35240, 38764, 48455, 77528, 96910, 193820, 387640]

約数ペア:

[(1, 387640), (2, 193820), (4, 96910), (5, 77528), (8, 48455), (10, 38764), (11, 35240), (20, 19382), (22, 17620), (40, 9691), (44, 8810), (55, 7048), (88, 4405), (110, 3524), (220, 1762), (440, 881)]