31126820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 68802048

約数和(自身を除く): 37675228

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 157, 230, 314, 431, 460, 628, 785, 862, 1570, 1724, 2155, 3140, 3611, 4310, 7222, 8620, 9913, 14444, 18055, 19826, 36110, 39652, 49565, 67667, 72220, 99130, 135334, 198260, 270668, 338335, 676670, 1353340, 1556341, 3112682, 6225364, 7781705, 15563410, 31126820]

約数ペア:

[(1, 31126820), (2, 15563410), (4, 7781705), (5, 6225364), (10, 3112682), (20, 1556341), (23, 1353340), (46, 676670), (92, 338335), (115, 270668), (157, 198260), (230, 135334), (314, 99130), (431, 72220), (460, 67667), (628, 49565), (785, 39652), (862, 36110), (1570, 19826), (1724, 18055), (2155, 14444), (3140, 9913), (3611, 8620), (4310, 7222)]