20471828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{5393}}^1$

素因数の和:5483

約数の個数: 24

約数和(自身を含む): 39117288

約数和(自身を除く): 18645460

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 5393, 10786, 21572, 70109, 140218, 280436, 393689, 787378, 1574756, 5117957, 10235914, 20471828]

約数ペア:

[(1, 20471828), (2, 10235914), (4, 5117957), (13, 1574756), (26, 787378), (52, 393689), (73, 280436), (146, 140218), (292, 70109), (949, 21572), (1898, 10786), (3796, 5393)]