31309971

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1$

素因数の和:129

約数の個数: 72

約数和(自身を含む): 57116736

約数和(自身を除く): 25806765

約数列:

[1, 3, 7, 11, 17, 21, 33, 49, 51, 67, 77, 119, 147, 187, 201, 231, 289, 357, 469, 539, 561, 737, 833, 867, 1139, 1309, 1407, 1617, 2023, 2211, 2499, 3179, 3283, 3417, 3927, 5159, 6069, 7973, 9163, 9537, 9849, 12529, 14161, 15477, 19363, 22253, 23919, 27489, 36113, 37587, 42483, 55811, 58089, 66759, 87703, 108339, 135541, 155771, 167433, 212993, 263109, 406623, 467313, 613921, 638979, 948787, 1490951, 1841763, 2846361, 4472853, 10436657, 31309971]

約数ペア:

[(1, 31309971), (3, 10436657), (7, 4472853), (11, 2846361), (17, 1841763), (21, 1490951), (33, 948787), (49, 638979), (51, 613921), (67, 467313), (77, 406623), (119, 263109), (147, 212993), (187, 167433), (201, 155771), (231, 135541), (289, 108339), (357, 87703), (469, 66759), (539, 58089), (561, 55811), (737, 42483), (833, 37587), (867, 36113), (1139, 27489), (1309, 23919), (1407, 22253), (1617, 19363), (2023, 15477), (2211, 14161), (2499, 12529), (3179, 9849), (3283, 9537), (3417, 9163), (3927, 7973), (5159, 6069)]