21087442108

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{5485807}}^1$

素因数の和:5485873

約数の個数: 18

約数和(自身を含む): 38131851408

約数和(自身を除く): 17044409300

約数列:

[1, 2, 4, 31, 62, 124, 961, 1922, 3844, 5485807, 10971614, 21943228, 170060017, 340120034, 680240068, 5271860527, 10543721054, 21087442108]

約数ペア:

[(1, 21087442108), (2, 10543721054), (4, 5271860527), (31, 680240068), (62, 340120034), (124, 170060017), (961, 21943228), (1922, 10971614), (3844, 5485807)]