20165904128

素因数分解:

$2^8\times {\mathrm{78773063}}^1$

素因数の和:78773079

約数の個数: 18

約数和(自身を含む): 40253035704

約数和(自身を除く): 20087131576

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 78773063, 157546126, 315092252, 630184504, 1260369008, 2520738016, 5041476032, 10082952064, 20165904128]

約数ペア:

[(1, 20165904128), (2, 10082952064), (4, 5041476032), (8, 2520738016), (16, 1260369008), (32, 630184504), (64, 315092252), (128, 157546126), (256, 78773063)]