21842288

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{607}}^1$

素因数の和:801

約数の個数: 40

約数和(自身を含む): 45913728

約数和(自身を除く): 24071440

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 173, 208, 346, 607, 692, 1214, 1384, 2249, 2428, 2768, 4498, 4856, 7891, 8996, 9712, 15782, 17992, 31564, 35984, 63128, 105011, 126256, 210022, 420044, 840088, 1365143, 1680176, 2730286, 5460572, 10921144, 21842288]

約数ペア:

[(1, 21842288), (2, 10921144), (4, 5460572), (8, 2730286), (13, 1680176), (16, 1365143), (26, 840088), (52, 420044), (104, 210022), (173, 126256), (208, 105011), (346, 63128), (607, 35984), (692, 31564), (1214, 17992), (1384, 15782), (2249, 9712), (2428, 8996), (2768, 7891), (4498, 4856)]