17951020

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1999}}^1$

素因数の和:2457

約数の個数: 24

約数和(自身を含む): 37800000

約数和(自身を除く): 19848980

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 1999, 2245, 3998, 4490, 7996, 8980, 9995, 19990, 39980, 897551, 1795102, 3590204, 4487755, 8975510, 17951020]

約数ペア:

[(1, 17951020), (2, 8975510), (4, 4487755), (5, 3590204), (10, 1795102), (20, 897551), (449, 39980), (898, 19990), (1796, 9995), (1999, 8980), (2245, 7996), (3998, 4490)]