18721390

素因数分解:

$2^1\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{1439}}^1$

素因数の和:2747

約数の個数: 16

約数和(自身を含む): 33747840

約数和(自身を除く): 15026450

約数列:

[1, 2, 5, 10, 1301, 1439, 2602, 2878, 6505, 7195, 13010, 14390, 1872139, 3744278, 9360695, 18721390]

約数ペア:

[(1, 18721390), (2, 9360695), (5, 3744278), (10, 1872139), (1301, 14390), (1439, 13010), (2602, 7195), (2878, 6505)]