19987360

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2357}}^1$

素因数の和:2425

約数の個数: 48

約数和(自身を含む): 48131496

約数和(自身を除く): 28144136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2357, 4240, 4714, 8480, 9428, 11785, 18856, 23570, 37712, 47140, 75424, 94280, 124921, 188560, 249842, 377120, 499684, 624605, 999368, 1249210, 1998736, 2498420, 3997472, 4996840, 9993680, 19987360]

約数ペア:

[(1, 19987360), (2, 9993680), (4, 4996840), (5, 3997472), (8, 2498420), (10, 1998736), (16, 1249210), (20, 999368), (32, 624605), (40, 499684), (53, 377120), (80, 249842), (106, 188560), (160, 124921), (212, 94280), (265, 75424), (424, 47140), (530, 37712), (848, 23570), (1060, 18856), (1696, 11785), (2120, 9428), (2357, 8480), (4240, 4714)]