21499060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1237}}^1$

素因数の和:1336

約数の個数: 48

約数和(自身を含む): 49916160

約数和(自身を除く): 28417100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1237, 1580, 1738, 2474, 3476, 4345, 4948, 6185, 8690, 12370, 13607, 17380, 24740, 27214, 54428, 68035, 97723, 136070, 195446, 272140, 390892, 488615, 977230, 1074953, 1954460, 2149906, 4299812, 5374765, 10749530, 21499060]

約数ペア:

[(1, 21499060), (2, 10749530), (4, 5374765), (5, 4299812), (10, 2149906), (11, 1954460), (20, 1074953), (22, 977230), (44, 488615), (55, 390892), (79, 272140), (110, 195446), (158, 136070), (220, 97723), (316, 68035), (395, 54428), (790, 27214), (869, 24740), (1237, 17380), (1580, 13607), (1738, 12370), (2474, 8690), (3476, 6185), (4345, 4948)]