21397595

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1087}}^1$

素因数の和:1250

約数の個数: 16

約数和(自身を含む): 26738688

約数和(自身を除く): 5341093

約数列:

[1, 5, 31, 127, 155, 635, 1087, 3937, 5435, 19685, 33697, 138049, 168485, 690245, 4279519, 21397595]

約数ペア:

[(1, 21397595), (5, 4279519), (31, 690245), (127, 168485), (155, 138049), (635, 33697), (1087, 19685), (3937, 5435)]