20444445

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1583}}^1$

素因数の和:1642

約数の個数: 48

約数和(自身を含む): 41513472

約数和(自身を除く): 21069027

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 41, 45, 63, 105, 123, 205, 287, 315, 369, 615, 861, 1435, 1583, 1845, 2583, 4305, 4749, 7915, 11081, 12915, 14247, 23745, 33243, 55405, 64903, 71235, 99729, 166215, 194709, 324515, 454321, 498645, 584127, 973545, 1362963, 2271605, 2920635, 4088889, 6814815, 20444445]

約数ペア:

[(1, 20444445), (3, 6814815), (5, 4088889), (7, 2920635), (9, 2271605), (15, 1362963), (21, 973545), (35, 584127), (41, 498645), (45, 454321), (63, 324515), (105, 194709), (123, 166215), (205, 99729), (287, 71235), (315, 64903), (369, 55405), (615, 33243), (861, 23745), (1435, 14247), (1583, 12915), (1845, 11081), (2583, 7915), (4305, 4749)]