21239545

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{3163}}^1$

素因数の和:3264

約数の個数: 16

約数和(自身を含む): 27336960

約数和(自身を除く): 6097415

約数列:

[1, 5, 17, 79, 85, 395, 1343, 3163, 6715, 15815, 53771, 249877, 268855, 1249385, 4247909, 21239545]

約数ペア:

[(1, 21239545), (5, 4247909), (17, 1249385), (79, 268855), (85, 249877), (395, 53771), (1343, 15815), (3163, 6715)]