80127920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23293}}^1$

素因数の和:23349

約数の個数: 40

約数和(自身を含む): 190638096

約数和(自身を除く): 110510176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 23293, 46586, 93172, 116465, 186344, 232930, 372688, 465860, 931720, 1001599, 1863440, 2003198, 4006396, 5007995, 8012792, 10015990, 16025584, 20031980, 40063960, 80127920]

約数ペア:

[(1, 80127920), (2, 40063960), (4, 20031980), (5, 16025584), (8, 10015990), (10, 8012792), (16, 5007995), (20, 4006396), (40, 2003198), (43, 1863440), (80, 1001599), (86, 931720), (172, 465860), (215, 372688), (344, 232930), (430, 186344), (688, 116465), (860, 93172), (1720, 46586), (3440, 23293)]