257360120

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{63703}}^1$

素因数の和:63815

約数の個数: 32

約数和(自身を含む): 584802720

約数和(自身を除く): 327442600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 63703, 127406, 254812, 318515, 509624, 637030, 1274060, 2548120, 6434003, 12868006, 25736012, 32170015, 51472024, 64340030, 128680060, 257360120]

約数ペア:

[(1, 257360120), (2, 128680060), (4, 64340030), (5, 51472024), (8, 32170015), (10, 25736012), (20, 12868006), (40, 6434003), (101, 2548120), (202, 1274060), (404, 637030), (505, 509624), (808, 318515), (1010, 254812), (2020, 127406), (4040, 63703)]