26522020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{487}}^1$

素因数の和:892

約数の個数: 48

約数和(自身を含む): 63947520

約数和(自身を除く): 37425500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 389, 487, 778, 974, 1556, 1945, 1948, 2435, 2723, 3409, 3890, 4870, 5446, 6818, 7780, 9740, 10892, 13615, 13636, 17045, 27230, 34090, 54460, 68180, 189443, 378886, 757772, 947215, 1326101, 1894430, 2652202, 3788860, 5304404, 6630505, 13261010, 26522020]

約数ペア:

[(1, 26522020), (2, 13261010), (4, 6630505), (5, 5304404), (7, 3788860), (10, 2652202), (14, 1894430), (20, 1326101), (28, 947215), (35, 757772), (70, 378886), (140, 189443), (389, 68180), (487, 54460), (778, 34090), (974, 27230), (1556, 17045), (1945, 13636), (1948, 13615), (2435, 10892), (2723, 9740), (3409, 7780), (3890, 6818), (4870, 5446)]