21168340

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{3821}}^1$

素因数の和:4107

約数の個数: 24

約数和(自身を含む): 44625672

約数和(自身を除く): 23457332

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 3821, 5540, 7642, 15284, 19105, 38210, 76420, 1058417, 2116834, 4233668, 5292085, 10584170, 21168340]

約数ペア:

[(1, 21168340), (2, 10584170), (4, 5292085), (5, 4233668), (10, 2116834), (20, 1058417), (277, 76420), (554, 38210), (1108, 19105), (1385, 15284), (2770, 7642), (3821, 5540)]