21361575

素因数分解:

$3^1\times 5^2\times {\mathrm{271}}^1\times {\mathrm{1051}}^1$

素因数の和:1335

約数の個数: 24

約数和(自身を含む): 35481856

約数和(自身を除く): 14120281

約数列:

[1, 3, 5, 15, 25, 75, 271, 813, 1051, 1355, 3153, 4065, 5255, 6775, 15765, 20325, 26275, 78825, 284821, 854463, 1424105, 4272315, 7120525, 21361575]

約数ペア:

[(1, 21361575), (3, 7120525), (5, 4272315), (15, 1424105), (25, 854463), (75, 284821), (271, 78825), (813, 26275), (1051, 20325), (1355, 15765), (3153, 6775), (4065, 5255)]