17991920

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{941}}^1$

素因数の和:1193

約数の個数: 40

約数和(自身を含む): 42050880

約数和(自身を除く): 24058960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 941, 956, 1195, 1882, 1912, 2390, 3764, 3824, 4705, 4780, 7528, 9410, 9560, 15056, 18820, 19120, 37640, 75280, 224899, 449798, 899596, 1124495, 1799192, 2248990, 3598384, 4497980, 8995960, 17991920]

約数ペア:

[(1, 17991920), (2, 8995960), (4, 4497980), (5, 3598384), (8, 2248990), (10, 1799192), (16, 1124495), (20, 899596), (40, 449798), (80, 224899), (239, 75280), (478, 37640), (941, 19120), (956, 18820), (1195, 15056), (1882, 9560), (1912, 9410), (2390, 7528), (3764, 4780), (3824, 4705)]