31212420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{787}}^1$

素因数の和:1460

約数の個数: 48

約数和(自身を含む): 87638208

約数和(自身を除く): 56425788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 661, 787, 1322, 1574, 1983, 2361, 2644, 3148, 3305, 3935, 3966, 4722, 6610, 7870, 7932, 9444, 9915, 11805, 13220, 15740, 19830, 23610, 39660, 47220, 520207, 1040414, 1560621, 2080828, 2601035, 3121242, 5202070, 6242484, 7803105, 10404140, 15606210, 31212420]

約数ペア:

[(1, 31212420), (2, 15606210), (3, 10404140), (4, 7803105), (5, 6242484), (6, 5202070), (10, 3121242), (12, 2601035), (15, 2080828), (20, 1560621), (30, 1040414), (60, 520207), (661, 47220), (787, 39660), (1322, 23610), (1574, 19830), (1983, 15740), (2361, 13220), (2644, 11805), (3148, 9915), (3305, 9444), (3935, 7932), (3966, 7870), (4722, 6610)]