21669579

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 33331200

約数和(自身を除く): 11661621

約数列:

[1, 3, 9, 27, 59, 61, 177, 183, 223, 531, 549, 669, 1593, 1647, 2007, 3599, 6021, 10797, 13157, 13603, 32391, 39471, 40809, 97173, 118413, 122427, 355239, 367281, 802577, 2407731, 7223193, 21669579]

約数ペア:

[(1, 21669579), (3, 7223193), (9, 2407731), (27, 802577), (59, 367281), (61, 355239), (177, 122427), (183, 118413), (223, 97173), (531, 40809), (549, 39471), (669, 32391), (1593, 13603), (1647, 13157), (2007, 10797), (3599, 6021)]