31501720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{353}}^1$

素因数の和:484

約数の個数: 64

約数和(自身を含む): 74934720

約数和(自身を除く): 43433000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 97, 115, 184, 194, 230, 353, 388, 460, 485, 706, 776, 920, 970, 1412, 1765, 1940, 2231, 2824, 3530, 3880, 4462, 7060, 8119, 8924, 11155, 14120, 16238, 17848, 22310, 32476, 34241, 40595, 44620, 64952, 68482, 81190, 89240, 136964, 162380, 171205, 273928, 324760, 342410, 684820, 787543, 1369640, 1575086, 3150172, 3937715, 6300344, 7875430, 15750860, 31501720]

約数ペア:

[(1, 31501720), (2, 15750860), (4, 7875430), (5, 6300344), (8, 3937715), (10, 3150172), (20, 1575086), (23, 1369640), (40, 787543), (46, 684820), (92, 342410), (97, 324760), (115, 273928), (184, 171205), (194, 162380), (230, 136964), (353, 89240), (388, 81190), (460, 68482), (485, 64952), (706, 44620), (776, 40595), (920, 34241), (970, 32476), (1412, 22310), (1765, 17848), (1940, 16238), (2231, 14120), (2824, 11155), (3530, 8924), (3880, 8119), (4462, 7060)]