808780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 1995840

約数和(自身を除く): 1187060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 109, 140, 212, 218, 265, 371, 436, 530, 545, 742, 763, 1060, 1090, 1484, 1526, 1855, 2180, 3052, 3710, 3815, 5777, 7420, 7630, 11554, 15260, 23108, 28885, 40439, 57770, 80878, 115540, 161756, 202195, 404390, 808780]

約数ペア:

[(1, 808780), (2, 404390), (4, 202195), (5, 161756), (7, 115540), (10, 80878), (14, 57770), (20, 40439), (28, 28885), (35, 23108), (53, 15260), (70, 11554), (106, 7630), (109, 7420), (140, 5777), (212, 3815), (218, 3710), (265, 3052), (371, 2180), (436, 1855), (530, 1526), (545, 1484), (742, 1090), (763, 1060)]