21899540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84229}}^1$

素因数の和:84251

約数の個数: 24

約数和(自身を含む): 49527240

約数和(自身を除く): 27627700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84229, 168458, 336916, 421145, 842290, 1094977, 1684580, 2189954, 4379908, 5474885, 10949770, 21899540]

約数ペア:

[(1, 21899540), (2, 10949770), (4, 5474885), (5, 4379908), (10, 2189954), (13, 1684580), (20, 1094977), (26, 842290), (52, 421145), (65, 336916), (130, 168458), (260, 84229)]