20258992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{563}}^1$

素因数の和:757

約数の個数: 40

約数和(自身を含む): 42591024

約数和(自身を除く): 22332032

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 173, 208, 346, 563, 692, 1126, 1384, 2249, 2252, 2768, 4498, 4504, 7319, 8996, 9008, 14638, 17992, 29276, 35984, 58552, 97399, 117104, 194798, 389596, 779192, 1266187, 1558384, 2532374, 5064748, 10129496, 20258992]

約数ペア:

[(1, 20258992), (2, 10129496), (4, 5064748), (8, 2532374), (13, 1558384), (16, 1266187), (26, 779192), (52, 389596), (104, 194798), (173, 117104), (208, 97399), (346, 58552), (563, 35984), (692, 29276), (1126, 17992), (1384, 14638), (2249, 9008), (2252, 8996), (2768, 7319), (4498, 4504)]