639391105

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{30881}}^1$

素因数の和:31028

約数の個数: 16

約数和(自身を含む): 793790928

約数和(自身を除く): 154399823

約数列:

[1, 5, 41, 101, 205, 505, 4141, 20705, 30881, 154405, 1266121, 3118981, 6330605, 15594905, 127878221, 639391105]

約数ペア:

[(1, 639391105), (5, 127878221), (41, 15594905), (101, 6330605), (205, 3118981), (505, 1266121), (4141, 154405), (20705, 30881)]