18964755

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{541}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 35511840

約数和(自身を除く): 16547085

約数列:

[1, 3, 5, 9, 15, 19, 41, 45, 57, 95, 123, 171, 205, 285, 369, 541, 615, 779, 855, 1623, 1845, 2337, 2705, 3895, 4869, 7011, 8115, 10279, 11685, 22181, 24345, 30837, 35055, 51395, 66543, 92511, 110905, 154185, 199629, 332715, 421439, 462555, 998145, 1264317, 2107195, 3792951, 6321585, 18964755]

約数ペア:

[(1, 18964755), (3, 6321585), (5, 3792951), (9, 2107195), (15, 1264317), (19, 998145), (41, 462555), (45, 421439), (57, 332715), (95, 199629), (123, 154185), (171, 110905), (205, 92511), (285, 66543), (369, 51395), (541, 35055), (615, 30837), (779, 24345), (855, 22181), (1623, 11685), (1845, 10279), (2337, 8115), (2705, 7011), (3895, 4869)]