1681840

素因数分解:

$2^4\times 5^1\times {\mathrm{21023}}^1$

素因数の和:21036

約数の個数: 20

約数和(自身を含む): 3910464

約数和(自身を除く): 2228624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21023, 42046, 84092, 105115, 168184, 210230, 336368, 420460, 840920, 1681840]

約数ペア:

[(1, 1681840), (2, 840920), (4, 420460), (5, 336368), (8, 210230), (10, 168184), (16, 105115), (20, 84092), (40, 42046), (80, 21023)]