198762021

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 319213440

約数和(自身を除く): 120451419

約数列:

[1, 3, 9, 19, 23, 57, 69, 97, 171, 207, 291, 437, 521, 873, 1311, 1563, 1843, 2231, 3933, 4689, 5529, 6693, 9899, 11983, 16587, 20079, 29697, 35949, 42389, 50537, 89091, 107847, 127167, 151611, 227677, 381501, 454833, 683031, 960203, 1162351, 2049093, 2880609, 3487053, 8641827, 10461159, 22084669, 66254007, 198762021]

約数ペア:

[(1, 198762021), (3, 66254007), (9, 22084669), (19, 10461159), (23, 8641827), (57, 3487053), (69, 2880609), (97, 2049093), (171, 1162351), (207, 960203), (291, 683031), (437, 454833), (521, 381501), (873, 227677), (1311, 151611), (1563, 127167), (1843, 107847), (2231, 89091), (3933, 50537), (4689, 42389), (5529, 35949), (6693, 29697), (9899, 20079), (11983, 16587)]