18858890

素因数分解:

$2^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{6959}}^1$

素因数の和:7237

約数の個数: 16

約数和(自身を含む): 34076160

約数和(自身を除く): 15217270

約数列:

[1, 2, 5, 10, 271, 542, 1355, 2710, 6959, 13918, 34795, 69590, 1885889, 3771778, 9429445, 18858890]

約数ペア:

[(1, 18858890), (2, 9429445), (5, 3771778), (10, 1885889), (271, 69590), (542, 34795), (1355, 13918), (2710, 6959)]