21621136

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43591}}^1$

素因数の和:43630

約数の個数: 20

約数和(自身を含む): 43243264

約数和(自身を除く): 21622128

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43591, 87182, 174364, 348728, 697456, 1351321, 2702642, 5405284, 10810568, 21621136]

約数ペア:

[(1, 21621136), (2, 10810568), (4, 5405284), (8, 2702642), (16, 1351321), (31, 697456), (62, 348728), (124, 174364), (248, 87182), (496, 43591)]