15831880

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2521}}^1$

素因数の和:2689

約数の個数: 32

約数和(自身を含む): 35862840

約数和(自身を除く): 20030960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 2521, 3140, 5042, 6280, 10084, 12605, 20168, 25210, 50420, 100840, 395797, 791594, 1583188, 1978985, 3166376, 3957970, 7915940, 15831880]

約数ペア:

[(1, 15831880), (2, 7915940), (4, 3957970), (5, 3166376), (8, 1978985), (10, 1583188), (20, 791594), (40, 395797), (157, 100840), (314, 50420), (628, 25210), (785, 20168), (1256, 12605), (1570, 10084), (2521, 6280), (3140, 5042)]