20191815

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{929}}^1$

素因数の和:973

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 22662585

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 27, 35, 45, 63, 69, 105, 115, 135, 161, 189, 207, 315, 345, 483, 621, 805, 929, 945, 1035, 1449, 2415, 2787, 3105, 4347, 4645, 6503, 7245, 8361, 13935, 19509, 21367, 21735, 25083, 32515, 41805, 58527, 64101, 97545, 106835, 125415, 149569, 175581, 192303, 292635, 320505, 448707, 576909, 747845, 877905, 961515, 1346121, 2243535, 2884545, 4038363, 6730605, 20191815]

約数ペア:

[(1, 20191815), (3, 6730605), (5, 4038363), (7, 2884545), (9, 2243535), (15, 1346121), (21, 961515), (23, 877905), (27, 747845), (35, 576909), (45, 448707), (63, 320505), (69, 292635), (105, 192303), (115, 175581), (135, 149569), (161, 125415), (189, 106835), (207, 97545), (315, 64101), (345, 58527), (483, 41805), (621, 32515), (805, 25083), (929, 21735), (945, 21367), (1035, 19509), (1449, 13935), (2415, 8361), (2787, 7245), (3105, 6503), (4347, 4645)]