81274840

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{8431}}^1$

素因数の和:8683

約数の個数: 32

約数和(自身を含む): 183648960

約数和(自身を除く): 102374120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2410, 4820, 8431, 9640, 16862, 33724, 42155, 67448, 84310, 168620, 337240, 2031871, 4063742, 8127484, 10159355, 16254968, 20318710, 40637420, 81274840]

約数ペア:

[(1, 81274840), (2, 40637420), (4, 20318710), (5, 16254968), (8, 10159355), (10, 8127484), (20, 4063742), (40, 2031871), (241, 337240), (482, 168620), (964, 84310), (1205, 67448), (1928, 42155), (2410, 33724), (4820, 16862), (8431, 9640)]