21036910

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{859}}^1$

素因数の和:976

約数の個数: 32

約数和(自身を含む): 39628800

約数和(自身を除く): 18591890

約数列:

[1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 790, 859, 1718, 2449, 4295, 4898, 8590, 12245, 24490, 26629, 53258, 67861, 133145, 135722, 266290, 339305, 678610, 2103691, 4207382, 10518455, 21036910]

約数ペア:

[(1, 21036910), (2, 10518455), (5, 4207382), (10, 2103691), (31, 678610), (62, 339305), (79, 266290), (155, 135722), (158, 133145), (310, 67861), (395, 53258), (790, 26629), (859, 24490), (1718, 12245), (2449, 8590), (4295, 4898)]