18800990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4987}}^1$

素因数の和:5036

約数の個数: 32

約数和(自身を含む): 37709280

約数和(自身を除く): 18908290

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 4987, 9974, 24935, 49870, 64831, 129662, 144623, 289246, 324155, 648310, 723115, 1446230, 1880099, 3760198, 9400495, 18800990]

約数ペア:

[(1, 18800990), (2, 9400495), (5, 3760198), (10, 1880099), (13, 1446230), (26, 723115), (29, 648310), (58, 324155), (65, 289246), (130, 144623), (145, 129662), (290, 64831), (377, 49870), (754, 24935), (1885, 9974), (3770, 4987)]