20845864

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{883}}^1$

素因数の和:1129

約数の個数: 32

約数和(自身を含む): 42325920

約数和(自身を除く): 21480056

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 227, 454, 883, 908, 1766, 1816, 2951, 3532, 5902, 7064, 11479, 11804, 22958, 23608, 45916, 91832, 200441, 400882, 801764, 1603528, 2605733, 5211466, 10422932, 20845864]

約数ペア:

[(1, 20845864), (2, 10422932), (4, 5211466), (8, 2605733), (13, 1603528), (26, 801764), (52, 400882), (104, 200441), (227, 91832), (454, 45916), (883, 23608), (908, 22958), (1766, 11804), (1816, 11479), (2951, 7064), (3532, 5902)]