81542900

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{7481}}^1$

素因数の和:7604

約数の個数: 36

約数和(自身を含む): 178595340

約数和(自身を除く): 97052440

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 218, 436, 545, 1090, 2180, 2725, 5450, 7481, 10900, 14962, 29924, 37405, 74810, 149620, 187025, 374050, 748100, 815429, 1630858, 3261716, 4077145, 8154290, 16308580, 20385725, 40771450, 81542900]

約数ペア:

[(1, 81542900), (2, 40771450), (4, 20385725), (5, 16308580), (10, 8154290), (20, 4077145), (25, 3261716), (50, 1630858), (100, 815429), (109, 748100), (218, 374050), (436, 187025), (545, 149620), (1090, 74810), (2180, 37405), (2725, 29924), (5450, 14962), (7481, 10900)]