21258780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{354313}}^1$

素因数の和:354325

約数の個数: 24

約数和(自身を含む): 59524752

約数和(自身を除く): 38265972

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 354313, 708626, 1062939, 1417252, 1771565, 2125878, 3543130, 4251756, 5314695, 7086260, 10629390, 21258780]

約数ペア:

[(1, 21258780), (2, 10629390), (3, 7086260), (4, 5314695), (5, 4251756), (6, 3543130), (10, 2125878), (12, 1771565), (15, 1417252), (20, 1062939), (30, 708626), (60, 354313)]