21605128

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{7481}}^1$

素因数の和:7525

約数の個数: 24

約数和(自身を含む): 42759630

約数和(自身を除く): 21154502

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 361, 722, 1444, 2888, 7481, 14962, 29924, 59848, 142139, 284278, 568556, 1137112, 2700641, 5401282, 10802564, 21605128]

約数ペア:

[(1, 21605128), (2, 10802564), (4, 5401282), (8, 2700641), (19, 1137112), (38, 568556), (76, 284278), (152, 142139), (361, 59848), (722, 29924), (1444, 14962), (2888, 7481)]