20198565

素因数分解:

$3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{941}}^1$

素因数の和:1011

約数の個数: 40

約数和(自身を含む): 36930168

約数和(自身を除く): 16731603

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 135, 159, 265, 405, 477, 795, 941, 1431, 2385, 2823, 4293, 4705, 7155, 8469, 14115, 21465, 25407, 42345, 49873, 76221, 127035, 149619, 249365, 381105, 448857, 748095, 1346571, 2244285, 4039713, 6732855, 20198565]

約数ペア:

[(1, 20198565), (3, 6732855), (5, 4039713), (9, 2244285), (15, 1346571), (27, 748095), (45, 448857), (53, 381105), (81, 249365), (135, 149619), (159, 127035), (265, 76221), (405, 49873), (477, 42345), (795, 25407), (941, 21465), (1431, 14115), (2385, 8469), (2823, 7155), (4293, 4705)]