19388560

素因数分解:

$2^4\times 5^1\times {\mathrm{242357}}^1$

素因数の和:242370

約数の個数: 20

約数和(自身を含む): 45078588

約数和(自身を除く): 25690028

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242357, 484714, 969428, 1211785, 1938856, 2423570, 3877712, 4847140, 9694280, 19388560]

約数ペア:

[(1, 19388560), (2, 9694280), (4, 4847140), (5, 3877712), (8, 2423570), (10, 1938856), (16, 1211785), (20, 969428), (40, 484714), (80, 242357)]