21628737

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{461}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 33801768

約数和(自身を除く): 12173031

約数列:

[1, 3, 9, 13, 39, 117, 401, 461, 1203, 1383, 3609, 4149, 5213, 5993, 15639, 17979, 46917, 53937, 184861, 554583, 1663749, 2403193, 7209579, 21628737]

約数ペア:

[(1, 21628737), (3, 7209579), (9, 2403193), (13, 1663749), (39, 554583), (117, 184861), (401, 53937), (461, 46917), (1203, 17979), (1383, 15639), (3609, 5993), (4149, 5213)]