18219340

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{12479}}^1$

素因数の和:12561

約数の個数: 24

約数和(自身を含む): 38787840

約数和(自身を除く): 20568500

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 12479, 24958, 49916, 62395, 124790, 249580, 910967, 1821934, 3643868, 4554835, 9109670, 18219340]

約数ペア:

[(1, 18219340), (2, 9109670), (4, 4554835), (5, 3643868), (10, 1821934), (20, 910967), (73, 249580), (146, 124790), (292, 62395), (365, 49916), (730, 24958), (1460, 12479)]