21638428

素因数分解:

$2^2\times 7^1\times {\mathrm{727}}^1\times {\mathrm{1063}}^1$

素因数の和:1801

約数の個数: 24

約数和(自身を含む): 43377152

約数和(自身を除く): 21738724

約数列:

[1, 2, 4, 7, 14, 28, 727, 1063, 1454, 2126, 2908, 4252, 5089, 7441, 10178, 14882, 20356, 29764, 772801, 1545602, 3091204, 5409607, 10819214, 21638428]

約数ペア:

[(1, 21638428), (2, 10819214), (4, 5409607), (7, 3091204), (14, 1545602), (28, 772801), (727, 29764), (1063, 20356), (1454, 14882), (2126, 10178), (2908, 7441), (4252, 5089)]