21133245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4909}}^1$

素因数の和:4965

約数の個数: 32

約数和(自身を含む): 39594240

約数和(自身を除く): 18460995

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 615, 861, 1435, 4305, 4909, 14727, 24545, 34363, 73635, 103089, 171815, 201269, 515445, 603807, 1006345, 1408883, 3019035, 4226649, 7044415, 21133245]

約数ペア:

[(1, 21133245), (3, 7044415), (5, 4226649), (7, 3019035), (15, 1408883), (21, 1006345), (35, 603807), (41, 515445), (105, 201269), (123, 171815), (205, 103089), (287, 73635), (615, 34363), (861, 24545), (1435, 14727), (4305, 4909)]