21242065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7788335

約数列:

[1, 5, 13, 29, 59, 65, 145, 191, 295, 377, 767, 955, 1711, 1885, 2483, 3835, 5539, 8555, 11269, 12415, 22243, 27695, 56345, 72007, 111215, 146497, 326801, 360035, 732485, 1634005, 4248413, 21242065]

約数ペア:

[(1, 21242065), (5, 4248413), (13, 1634005), (29, 732485), (59, 360035), (65, 326801), (145, 146497), (191, 111215), (295, 72007), (377, 56345), (767, 27695), (955, 22243), (1711, 12415), (1885, 11269), (2483, 8555), (3835, 5539)]