18568840

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4507}}^1$

素因数の和:4621

約数の個数: 32

約数和(自身を含む): 42194880

約数和(自身を除く): 23626040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4507, 9014, 18028, 22535, 36056, 45070, 90140, 180280, 464221, 928442, 1856884, 2321105, 3713768, 4642210, 9284420, 18568840]

約数ペア:

[(1, 18568840), (2, 9284420), (4, 4642210), (5, 3713768), (8, 2321105), (10, 1856884), (20, 928442), (40, 464221), (103, 180280), (206, 90140), (412, 45070), (515, 36056), (824, 22535), (1030, 18028), (2060, 9014), (4120, 4507)]