2638120

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{653}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 6003720

約数和(自身を除く): 3365600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 653, 808, 1010, 1306, 2020, 2612, 3265, 4040, 5224, 6530, 13060, 26120, 65953, 131906, 263812, 329765, 527624, 659530, 1319060, 2638120]

約数ペア:

[(1, 2638120), (2, 1319060), (4, 659530), (5, 527624), (8, 329765), (10, 263812), (20, 131906), (40, 65953), (101, 26120), (202, 13060), (404, 6530), (505, 5224), (653, 4040), (808, 3265), (1010, 2612), (1306, 2020)]