80715140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{2027}}^1$

素因数の和:2228

約数の個数: 48

約数和(自身を含む): 186024384

約数和(自身を除く): 105309244

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 220, 362, 724, 905, 1810, 1991, 2027, 3620, 3982, 4054, 7964, 8108, 9955, 10135, 19910, 20270, 22297, 39820, 40540, 44594, 89188, 111485, 222970, 366887, 445940, 733774, 1467548, 1834435, 3668870, 4035757, 7337740, 8071514, 16143028, 20178785, 40357570, 80715140]

約数ペア:

[(1, 80715140), (2, 40357570), (4, 20178785), (5, 16143028), (10, 8071514), (11, 7337740), (20, 4035757), (22, 3668870), (44, 1834435), (55, 1467548), (110, 733774), (181, 445940), (220, 366887), (362, 222970), (724, 111485), (905, 89188), (1810, 44594), (1991, 40540), (2027, 39820), (3620, 22297), (3982, 20270), (4054, 19910), (7964, 10135), (8108, 9955)]