28479220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18493}}^1$

素因数の和:18520

約数の個数: 48

約数和(自身を含む): 74567808

約数和(自身を除く): 46088588

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, 18493, 36986, 73972, 92465, 129451, 184930, 203423, 258902, 369860, 406846, 517804, 647255, 813692, 1017115, 1294510, 1423961, 2034230, 2589020, 2847922, 4068460, 5695844, 7119805, 14239610, 28479220]

約数ペア:

[(1, 28479220), (2, 14239610), (4, 7119805), (5, 5695844), (7, 4068460), (10, 2847922), (11, 2589020), (14, 2034230), (20, 1423961), (22, 1294510), (28, 1017115), (35, 813692), (44, 647255), (55, 517804), (70, 406846), (77, 369860), (110, 258902), (140, 203423), (154, 184930), (220, 129451), (308, 92465), (385, 73972), (770, 36986), (1540, 18493)]