20808015

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{22741}}^1$

素因数の和:22810

約数の個数: 16

約数和(自身を含む): 33840096

約数和(自身を除く): 13032081

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 22741, 68223, 113705, 341115, 1387201, 4161603, 6936005, 20808015]

約数ペア:

[(1, 20808015), (3, 6936005), (5, 4161603), (15, 1387201), (61, 341115), (183, 113705), (305, 68223), (915, 22741)]