90011020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{5179}}^1$

素因数の和:5278

約数の個数: 48

約数和(自身を含む): 208857600

約数和(自身を除く): 118846580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1738, 3476, 4345, 5179, 8690, 10358, 17380, 20716, 25895, 51790, 56969, 103580, 113938, 227876, 284845, 409141, 569690, 818282, 1139380, 1636564, 2045705, 4091410, 4500551, 8182820, 9001102, 18002204, 22502755, 45005510, 90011020]

約数ペア:

[(1, 90011020), (2, 45005510), (4, 22502755), (5, 18002204), (10, 9001102), (11, 8182820), (20, 4500551), (22, 4091410), (44, 2045705), (55, 1636564), (79, 1139380), (110, 818282), (158, 569690), (220, 409141), (316, 284845), (395, 227876), (790, 113938), (869, 103580), (1580, 56969), (1738, 51790), (3476, 25895), (4345, 20716), (5179, 17380), (8690, 10358)]