18927280

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2297}}^1$

素因数の和:2413

約数の個数: 40

約数和(自身を含む): 44452512

約数和(自身を除く): 25525232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 2297, 4120, 4594, 8240, 9188, 11485, 18376, 22970, 36752, 45940, 91880, 183760, 236591, 473182, 946364, 1182955, 1892728, 2365910, 3785456, 4731820, 9463640, 18927280]

約数ペア:

[(1, 18927280), (2, 9463640), (4, 4731820), (5, 3785456), (8, 2365910), (10, 1892728), (16, 1182955), (20, 946364), (40, 473182), (80, 236591), (103, 183760), (206, 91880), (412, 45940), (515, 36752), (824, 22970), (1030, 18376), (1648, 11485), (2060, 9188), (2297, 8240), (4120, 4594)]