17918120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{211}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 44418240

約数和(自身を除く): 26500120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 193, 211, 220, 386, 422, 440, 772, 844, 965, 1055, 1544, 1688, 1930, 2110, 2123, 2321, 3860, 4220, 4246, 4642, 7720, 8440, 8492, 9284, 10615, 11605, 16984, 18568, 21230, 23210, 40723, 42460, 46420, 81446, 84920, 92840, 162892, 203615, 325784, 407230, 447953, 814460, 895906, 1628920, 1791812, 2239765, 3583624, 4479530, 8959060, 17918120]

約数ペア:

[(1, 17918120), (2, 8959060), (4, 4479530), (5, 3583624), (8, 2239765), (10, 1791812), (11, 1628920), (20, 895906), (22, 814460), (40, 447953), (44, 407230), (55, 325784), (88, 203615), (110, 162892), (193, 92840), (211, 84920), (220, 81446), (386, 46420), (422, 42460), (440, 40723), (772, 23210), (844, 21230), (965, 18568), (1055, 16984), (1544, 11605), (1688, 10615), (1930, 9284), (2110, 8492), (2123, 8440), (2321, 7720), (3860, 4642), (4220, 4246)]