2505580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1627}}^1$

素因数の和:1654

約数の個数: 48

約数和(自身を含む): 6564096

約数和(自身を除く): 4058516

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 1627, 3254, 6508, 8135, 11389, 16270, 17897, 22778, 32540, 35794, 45556, 56945, 71588, 89485, 113890, 125279, 178970, 227780, 250558, 357940, 501116, 626395, 1252790, 2505580]

約数ペア:

[(1, 2505580), (2, 1252790), (4, 626395), (5, 501116), (7, 357940), (10, 250558), (11, 227780), (14, 178970), (20, 125279), (22, 113890), (28, 89485), (35, 71588), (44, 56945), (55, 45556), (70, 35794), (77, 32540), (110, 22778), (140, 17897), (154, 16270), (220, 11389), (308, 8135), (385, 6508), (770, 3254), (1540, 1627)]