18978574

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1\times {\mathrm{509}}^1$

素因数の和:795

約数の個数: 16

約数和(自身を含む): 28959840

約数和(自身を除く): 9981266

約数列:

[1, 2, 103, 181, 206, 362, 509, 1018, 18643, 37286, 52427, 92129, 104854, 184258, 9489287, 18978574]

約数ペア:

[(1, 18978574), (2, 9489287), (103, 184258), (181, 104854), (206, 92129), (362, 52427), (509, 37286), (1018, 18643)]