21994180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2917}}^1$

素因数の和:2968

約数の個数: 48

約数和(自身を含む): 51473520

約数和(自身を除く): 29479340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2917, 3770, 5834, 7540, 11668, 14585, 29170, 37921, 58340, 75842, 84593, 151684, 169186, 189605, 338372, 379210, 422965, 758420, 845930, 1099709, 1691860, 2199418, 4398836, 5498545, 10997090, 21994180]

約数ペア:

[(1, 21994180), (2, 10997090), (4, 5498545), (5, 4398836), (10, 2199418), (13, 1691860), (20, 1099709), (26, 845930), (29, 758420), (52, 422965), (58, 379210), (65, 338372), (116, 189605), (130, 169186), (145, 151684), (260, 84593), (290, 75842), (377, 58340), (580, 37921), (754, 29170), (1508, 14585), (1885, 11668), (2917, 7540), (3770, 5834)]