18780340

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{5981}}^1$

素因数の和:6147

約数の個数: 24

約数和(自身を含む): 39696552

約数和(自身を除く): 20916212

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 5981, 11962, 23924, 29905, 59810, 119620, 939017, 1878034, 3756068, 4695085, 9390170, 18780340]

約数ペア:

[(1, 18780340), (2, 9390170), (4, 4695085), (5, 3756068), (10, 1878034), (20, 939017), (157, 119620), (314, 59810), (628, 29905), (785, 23924), (1570, 11962), (3140, 5981)]