1661580905

素因数分解:

$5^1\times {\mathrm{67}}^2\times {\mathrm{181}}^1\times {\mathrm{409}}^1$

素因数の和:729

約数の個数: 24

約数和(自身を含む): 2040260040

約数和(自身を除く): 378679135

約数列:

[1, 5, 67, 181, 335, 409, 905, 2045, 4489, 12127, 22445, 27403, 60635, 74029, 137015, 370145, 812509, 1836001, 4062545, 4959943, 9180005, 24799715, 332316181, 1661580905]

約数ペア:

[(1, 1661580905), (5, 332316181), (67, 24799715), (181, 9180005), (335, 4959943), (409, 4062545), (905, 1836001), (2045, 812509), (4489, 370145), (12127, 137015), (22445, 74029), (27403, 60635)]