20854790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8243}}^1$

素因数の和:8284

約数の個数: 32

約数和(自身を含む): 42736896

約数和(自身を除く): 21882106

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8243, 16486, 41215, 82430, 90673, 181346, 189589, 379178, 453365, 906730, 947945, 1895890, 2085479, 4170958, 10427395, 20854790]

約数ペア:

[(1, 20854790), (2, 10427395), (5, 4170958), (10, 2085479), (11, 1895890), (22, 947945), (23, 906730), (46, 453365), (55, 379178), (110, 189589), (115, 181346), (230, 90673), (253, 82430), (506, 41215), (1265, 16486), (2530, 8243)]