21541108

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 20371532

約数列:

[1, 2, 4, 17, 34, 43, 53, 68, 86, 106, 139, 172, 212, 278, 556, 731, 901, 1462, 1802, 2279, 2363, 2924, 3604, 4558, 4726, 5977, 7367, 9116, 9452, 11954, 14734, 23908, 29468, 38743, 77486, 101609, 125239, 154972, 203218, 250478, 316781, 406436, 500956, 633562, 1267124, 5385277, 10770554, 21541108]

約数ペア:

[(1, 21541108), (2, 10770554), (4, 5385277), (17, 1267124), (34, 633562), (43, 500956), (53, 406436), (68, 316781), (86, 250478), (106, 203218), (139, 154972), (172, 125239), (212, 101609), (278, 77486), (556, 38743), (731, 29468), (901, 23908), (1462, 14734), (1802, 11954), (2279, 9452), (2363, 9116), (2924, 7367), (3604, 5977), (4558, 4726)]