31958840

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{7757}}^1$

素因数の和:7871

約数の個数: 32

約数和(自身を含む): 72614880

約数和(自身を除く): 40656040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 7757, 15514, 31028, 38785, 62056, 77570, 155140, 310280, 798971, 1597942, 3195884, 3994855, 6391768, 7989710, 15979420, 31958840]

約数ペア:

[(1, 31958840), (2, 15979420), (4, 7989710), (5, 6391768), (8, 3994855), (10, 3195884), (20, 1597942), (40, 798971), (103, 310280), (206, 155140), (412, 77570), (515, 62056), (824, 38785), (1030, 31028), (2060, 15514), (4120, 7757)]