18378856

素因数分解:

$2^3\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 35380800

約数和(自身を除く): 17001944

約数列:

[1, 2, 4, 8, 83, 89, 166, 178, 311, 332, 356, 622, 664, 712, 1244, 2488, 7387, 14774, 25813, 27679, 29548, 51626, 55358, 59096, 103252, 110716, 206504, 221432, 2297357, 4594714, 9189428, 18378856]

約数ペア:

[(1, 18378856), (2, 9189428), (4, 4594714), (8, 2297357), (83, 221432), (89, 206504), (166, 110716), (178, 103252), (311, 59096), (332, 55358), (356, 51626), (622, 29548), (664, 27679), (712, 25813), (1244, 14774), (2488, 7387)]