21999350

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{6197}}^1$

素因数の和:6280

約数の個数: 24

約数和(自身を含む): 41501808

約数和(自身を除く): 19502458

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 6197, 12394, 30985, 61970, 154925, 309850, 439987, 879974, 2199935, 4399870, 10999675, 21999350]

約数ペア:

[(1, 21999350), (2, 10999675), (5, 4399870), (10, 2199935), (25, 879974), (50, 439987), (71, 309850), (142, 154925), (355, 61970), (710, 30985), (1775, 12394), (3550, 6197)]