21745990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{7577}}^1$

素因数の和:7632

約数の個数: 32

約数和(自身を含む): 45831744

約数和(自身を除く): 24085754

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 70, 82, 205, 287, 410, 574, 1435, 2870, 7577, 15154, 37885, 53039, 75770, 106078, 265195, 310657, 530390, 621314, 1553285, 2174599, 3106570, 4349198, 10872995, 21745990]

約数ペア:

[(1, 21745990), (2, 10872995), (5, 4349198), (7, 3106570), (10, 2174599), (14, 1553285), (35, 621314), (41, 530390), (70, 310657), (82, 265195), (205, 106078), (287, 75770), (410, 53039), (574, 37885), (1435, 15154), (2870, 7577)]