20175920

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2357}}^1$

素因数の和:2477

約数の個数: 40

約数和(自身を含む): 47367504

約数和(自身を除く): 27191584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2357, 4280, 4714, 8560, 9428, 11785, 18856, 23570, 37712, 47140, 94280, 188560, 252199, 504398, 1008796, 1260995, 2017592, 2521990, 4035184, 5043980, 10087960, 20175920]

約数ペア:

[(1, 20175920), (2, 10087960), (4, 5043980), (5, 4035184), (8, 2521990), (10, 2017592), (16, 1260995), (20, 1008796), (40, 504398), (80, 252199), (107, 188560), (214, 94280), (428, 47140), (535, 37712), (856, 23570), (1070, 18856), (1712, 11785), (2140, 9428), (2357, 8560), (4280, 4714)]