221409604

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{327529}}^1$

素因数の和:327559

約数の個数: 18

約数和(自身を含む): 419565930

約数和(自身を除く): 198156326

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 327529, 655058, 1310116, 4257877, 8515754, 17031508, 55352401, 110704802, 221409604]

約数ペア:

[(1, 221409604), (2, 110704802), (4, 55352401), (13, 17031508), (26, 8515754), (52, 4257877), (169, 1310116), (338, 655058), (676, 327529)]