21128416

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{38839}}^1$

素因数の和:38866

約数の個数: 24

約数和(自身を含む): 44044560

約数和(自身を除く): 22916144

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 272, 544, 38839, 77678, 155356, 310712, 621424, 660263, 1242848, 1320526, 2641052, 5282104, 10564208, 21128416]

約数ペア:

[(1, 21128416), (2, 10564208), (4, 5282104), (8, 2641052), (16, 1320526), (17, 1242848), (32, 660263), (34, 621424), (68, 310712), (136, 155356), (272, 77678), (544, 38839)]