21761456

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8663}}^1$

素因数の和:8828

約数の個数: 20

約数和(自身を含む): 42436272

約数和(自身を除く): 20674816

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8663, 17326, 34652, 69304, 138608, 1360091, 2720182, 5440364, 10880728, 21761456]

約数ペア:

[(1, 21761456), (2, 10880728), (4, 5440364), (8, 2720182), (16, 1360091), (157, 138608), (314, 69304), (628, 34652), (1256, 17326), (2512, 8663)]