21136610

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 23653150

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 89, 110, 127, 170, 178, 187, 254, 374, 445, 635, 890, 935, 979, 1270, 1397, 1513, 1870, 1958, 2159, 2794, 3026, 4318, 4895, 6985, 7565, 9790, 10795, 11303, 13970, 15130, 16643, 21590, 22606, 23749, 33286, 47498, 56515, 83215, 113030, 118745, 124333, 166430, 192151, 237490, 248666, 384302, 621665, 960755, 1243330, 1921510, 2113661, 4227322, 10568305, 21136610]

約数ペア:

[(1, 21136610), (2, 10568305), (5, 4227322), (10, 2113661), (11, 1921510), (17, 1243330), (22, 960755), (34, 621665), (55, 384302), (85, 248666), (89, 237490), (110, 192151), (127, 166430), (170, 124333), (178, 118745), (187, 113030), (254, 83215), (374, 56515), (445, 47498), (635, 33286), (890, 23749), (935, 22606), (979, 21590), (1270, 16643), (1397, 15130), (1513, 13970), (1870, 11303), (1958, 10795), (2159, 9790), (2794, 7565), (3026, 6985), (4318, 4895)]