21861665

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20149}}^1$

素因数の和:20192

約数の個数: 16

約数和(自身を含む): 30950400

約数和(自身を除く): 9088735

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 20149, 100745, 141043, 624619, 705215, 3123095, 4372333, 21861665]

約数ペア:

[(1, 21861665), (5, 4372333), (7, 3123095), (31, 705215), (35, 624619), (155, 141043), (217, 100745), (1085, 20149)]