21858248

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{647}}^1$

素因数の和:797

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 20598712

約数列:

[1, 2, 4, 8, 41, 82, 103, 164, 206, 328, 412, 647, 824, 1294, 2588, 4223, 5176, 8446, 16892, 26527, 33784, 53054, 66641, 106108, 133282, 212216, 266564, 533128, 2732281, 5464562, 10929124, 21858248]

約数ペア:

[(1, 21858248), (2, 10929124), (4, 5464562), (8, 2732281), (41, 533128), (82, 266564), (103, 212216), (164, 133282), (206, 106108), (328, 66641), (412, 53054), (647, 33784), (824, 26527), (1294, 16892), (2588, 8446), (4223, 5176)]