25688840

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1153}}^1$

素因数の和:1721

約数の個数: 32

約数和(自身を含む): 57953880

約数和(自身を除く): 32265040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 1153, 2228, 2306, 2785, 4456, 4612, 5570, 5765, 9224, 11140, 11530, 22280, 23060, 46120, 642221, 1284442, 2568884, 3211105, 5137768, 6422210, 12844420, 25688840]

約数ペア:

[(1, 25688840), (2, 12844420), (4, 6422210), (5, 5137768), (8, 3211105), (10, 2568884), (20, 1284442), (40, 642221), (557, 46120), (1114, 23060), (1153, 22280), (2228, 11530), (2306, 11140), (2785, 9224), (4456, 5765), (4612, 5570)]