21366945

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 39089232

約数和(自身を除く): 17722287

約数列:

[1, 3, 5, 9, 15, 37, 41, 45, 111, 123, 185, 205, 313, 333, 369, 555, 615, 939, 1517, 1565, 1665, 1845, 2817, 4551, 4695, 7585, 11581, 12833, 13653, 14085, 22755, 34743, 38499, 57905, 64165, 68265, 104229, 115497, 173715, 192495, 474821, 521145, 577485, 1424463, 2374105, 4273389, 7122315, 21366945]

約数ペア:

[(1, 21366945), (3, 7122315), (5, 4273389), (9, 2374105), (15, 1424463), (37, 577485), (41, 521145), (45, 474821), (111, 192495), (123, 173715), (185, 115497), (205, 104229), (313, 68265), (333, 64165), (369, 57905), (555, 38499), (615, 34743), (939, 22755), (1517, 14085), (1565, 13653), (1665, 12833), (1845, 11581), (2817, 7585), (4551, 4695)]