21557792

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{15667}}^1$

素因数の和:15720

約数の個数: 24

約数和(自身を含む): 43431696

約数和(自身を除く): 21873904

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 15667, 31334, 62668, 125336, 250672, 501344, 673681, 1347362, 2694724, 5389448, 10778896, 21557792]

約数ペア:

[(1, 21557792), (2, 10778896), (4, 5389448), (8, 2694724), (16, 1347362), (32, 673681), (43, 501344), (86, 250672), (172, 125336), (344, 62668), (688, 31334), (1376, 15667)]