138988120

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{34403}}^1$

素因数の和:34515

約数の個数: 32

約数和(自身を含む): 315828720

約数和(自身を除く): 176840600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 34403, 68806, 137612, 172015, 275224, 344030, 688060, 1376120, 3474703, 6949406, 13898812, 17373515, 27797624, 34747030, 69494060, 138988120]

約数ペア:

[(1, 138988120), (2, 69494060), (4, 34747030), (5, 27797624), (8, 17373515), (10, 13898812), (20, 6949406), (40, 3474703), (101, 1376120), (202, 688060), (404, 344030), (505, 275224), (808, 172015), (1010, 137612), (2020, 68806), (4040, 34403)]