12990380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2939}}^1$

素因数の和:2978

約数の個数: 48

約数和(自身を含む): 31116960

約数和(自身を除く): 18126580

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 2939, 4420, 5878, 11756, 14695, 29390, 38207, 49963, 58780, 76414, 99926, 152828, 191035, 199852, 249815, 382070, 499630, 649519, 764140, 999260, 1299038, 2598076, 3247595, 6495190, 12990380]

約数ペア:

[(1, 12990380), (2, 6495190), (4, 3247595), (5, 2598076), (10, 1299038), (13, 999260), (17, 764140), (20, 649519), (26, 499630), (34, 382070), (52, 249815), (65, 199852), (68, 191035), (85, 152828), (130, 99926), (170, 76414), (221, 58780), (260, 49963), (340, 38207), (442, 29390), (884, 14695), (1105, 11756), (2210, 5878), (2939, 4420)]