806420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:731

約数の個数: 24

約数和(自身を含む): 1723848

約数和(自身を除く): 917428

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 661, 1220, 1322, 2644, 3305, 6610, 13220, 40321, 80642, 161284, 201605, 403210, 806420]

約数ペア:

[(1, 806420), (2, 403210), (4, 201605), (5, 161284), (10, 80642), (20, 40321), (61, 13220), (122, 6610), (244, 3305), (305, 2644), (610, 1322), (661, 1220)]