67279780

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{8389}}^1$

素因数の和:8799

約数の個数: 24

約数和(自身を含む): 141656760

約数和(自身を除く): 74376980

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 8389, 16778, 33556, 41945, 83890, 167780, 3363989, 6727978, 13455956, 16819945, 33639890, 67279780]

約数ペア:

[(1, 67279780), (2, 33639890), (4, 16819945), (5, 13455956), (10, 6727978), (20, 3363989), (401, 167780), (802, 83890), (1604, 41945), (2005, 33556), (4010, 16778), (8020, 8389)]