20915545

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{521}}^1$

素因数の和:601

約数の個数: 32

約数和(自身を含む): 30468096

約数和(自身を除く): 9552551

約数列:

[1, 5, 7, 31, 35, 37, 155, 185, 217, 259, 521, 1085, 1147, 1295, 2605, 3647, 5735, 8029, 16151, 18235, 19277, 40145, 80755, 96385, 113057, 134939, 565285, 597587, 674695, 2987935, 4183109, 20915545]

約数ペア:

[(1, 20915545), (5, 4183109), (7, 2987935), (31, 674695), (35, 597587), (37, 565285), (155, 134939), (185, 113057), (217, 96385), (259, 80755), (521, 40145), (1085, 19277), (1147, 18235), (1295, 16151), (2605, 8029), (3647, 5735)]