123309560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{280249}}^1$

素因数の和:280271

約数の個数: 32

約数和(自身を含む): 302670000

約数和(自身を除く): 179360440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 280249, 560498, 1120996, 1401245, 2241992, 2802490, 3082739, 5604980, 6165478, 11209960, 12330956, 15413695, 24661912, 30827390, 61654780, 123309560]

約数ペア:

[(1, 123309560), (2, 61654780), (4, 30827390), (5, 24661912), (8, 15413695), (10, 12330956), (11, 11209960), (20, 6165478), (22, 5604980), (40, 3082739), (44, 2802490), (55, 2241992), (88, 1401245), (110, 1120996), (220, 560498), (440, 280249)]