18987992

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2357}}^1$

素因数の和:2435

約数の個数: 32

約数和(自身を含む): 38199600

約数和(自身を除く): 19211608

約数列:

[1, 2, 4, 8, 19, 38, 53, 76, 106, 152, 212, 424, 1007, 2014, 2357, 4028, 4714, 8056, 9428, 18856, 44783, 89566, 124921, 179132, 249842, 358264, 499684, 999368, 2373499, 4746998, 9493996, 18987992]

約数ペア:

[(1, 18987992), (2, 9493996), (4, 4746998), (8, 2373499), (19, 999368), (38, 499684), (53, 358264), (76, 249842), (106, 179132), (152, 124921), (212, 89566), (424, 44783), (1007, 18856), (2014, 9428), (2357, 8056), (4028, 4714)]