21691145

素因数分解:

$5^1\times 7^1\times {\mathrm{607}}^1\times {\mathrm{1021}}^1$

素因数の和:1640

約数の個数: 16

約数和(自身を含む): 29826048

約数和(自身を除く): 8134903

約数列:

[1, 5, 7, 35, 607, 1021, 3035, 4249, 5105, 7147, 21245, 35735, 619747, 3098735, 4338229, 21691145]

約数ペア:

[(1, 21691145), (5, 4338229), (7, 3098735), (35, 619747), (607, 35735), (1021, 21245), (3035, 7147), (4249, 5105)]