16812440

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1109}}^1$

素因数の和:1499

約数の個数: 32

約数和(自身を含む): 37962000

約数和(自身を除く): 21149560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1109, 1516, 1895, 2218, 3032, 3790, 4436, 5545, 7580, 8872, 11090, 15160, 22180, 44360, 420311, 840622, 1681244, 2101555, 3362488, 4203110, 8406220, 16812440]

約数ペア:

[(1, 16812440), (2, 8406220), (4, 4203110), (5, 3362488), (8, 2101555), (10, 1681244), (20, 840622), (40, 420311), (379, 44360), (758, 22180), (1109, 15160), (1516, 11090), (1895, 8872), (2218, 7580), (3032, 5545), (3790, 4436)]