20493907

素因数分解:

$7^3\times {\mathrm{149}}^1\times {\mathrm{401}}^1$

素因数の和:571

約数の個数: 16

約数和(自身を含む): 24120000

約数和(自身を除く): 3626093

約数列:

[1, 7, 49, 149, 343, 401, 1043, 2807, 7301, 19649, 51107, 59749, 137543, 418243, 2927701, 20493907]

約数ペア:

[(1, 20493907), (7, 2927701), (49, 418243), (149, 137543), (343, 59749), (401, 51107), (1043, 19649), (2807, 7301)]