21887216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105227}}^1$

素因数の和:105248

約数の個数: 20

約数和(自身を含む): 45668952

約数和(自身を除く): 23781736

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105227, 210454, 420908, 841816, 1367951, 1683632, 2735902, 5471804, 10943608, 21887216]

約数ペア:

[(1, 21887216), (2, 10943608), (4, 5471804), (8, 2735902), (13, 1683632), (16, 1367951), (26, 841816), (52, 420908), (104, 210454), (208, 105227)]