20852455

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{167}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 28957824

約数和(自身を除く): 8105369

約数列:

[1, 5, 13, 17, 65, 85, 113, 167, 221, 565, 835, 1105, 1469, 1921, 2171, 2839, 7345, 9605, 10855, 14195, 18871, 24973, 36907, 94355, 124865, 184535, 245323, 320807, 1226615, 1604035, 4170491, 20852455]

約数ペア:

[(1, 20852455), (5, 4170491), (13, 1604035), (17, 1226615), (65, 320807), (85, 245323), (113, 184535), (167, 124865), (221, 94355), (565, 36907), (835, 24973), (1105, 18871), (1469, 14195), (1921, 10855), (2171, 9605), (2839, 7345)]