21159918

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2917}}^1$

素因数の和:2969

約数の個数: 48

約数和(自身を含む): 50983296

約数和(自身を除く): 29823378

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 62, 78, 93, 117, 186, 234, 279, 403, 558, 806, 1209, 2418, 2917, 3627, 5834, 7254, 8751, 17502, 26253, 37921, 52506, 75842, 90427, 113763, 180854, 227526, 271281, 341289, 542562, 682578, 813843, 1175551, 1627686, 2351102, 3526653, 7053306, 10579959, 21159918]

約数ペア:

[(1, 21159918), (2, 10579959), (3, 7053306), (6, 3526653), (9, 2351102), (13, 1627686), (18, 1175551), (26, 813843), (31, 682578), (39, 542562), (62, 341289), (78, 271281), (93, 227526), (117, 180854), (186, 113763), (234, 90427), (279, 75842), (403, 52506), (558, 37921), (806, 26253), (1209, 17502), (2418, 8751), (2917, 7254), (3627, 5834)]