18732649

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:157

約数の個数: 32

約数和(自身を含む): 22708224

約数和(自身を除く): 3975575

約数列:

[1, 13, 23, 31, 43, 47, 299, 403, 559, 611, 713, 989, 1081, 1333, 1457, 2021, 9269, 12857, 14053, 17329, 18941, 26273, 30659, 33511, 46483, 62651, 398567, 435643, 604279, 814463, 1440973, 18732649]

約数ペア:

[(1, 18732649), (13, 1440973), (23, 814463), (31, 604279), (43, 435643), (47, 398567), (299, 62651), (403, 46483), (559, 33511), (611, 30659), (713, 26273), (989, 18941), (1081, 17329), (1333, 14053), (1457, 12857), (2021, 9269)]