20394608

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1381}}^1$

素因数の和:1473

約数の個数: 40

約数和(自身を含む): 43184736

約数和(自身を除く): 22790128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1381, 1846, 2762, 3692, 5524, 7384, 11048, 14768, 17953, 22096, 35906, 71812, 98051, 143624, 196102, 287248, 392204, 784408, 1274663, 1568816, 2549326, 5098652, 10197304, 20394608]

約数ペア:

[(1, 20394608), (2, 10197304), (4, 5098652), (8, 2549326), (13, 1568816), (16, 1274663), (26, 784408), (52, 392204), (71, 287248), (104, 196102), (142, 143624), (208, 98051), (284, 71812), (568, 35906), (923, 22096), (1136, 17953), (1381, 14768), (1846, 11048), (2762, 7384), (3692, 5524)]