20743477515

素因数分解:

$3^5\times 5^1\times {\mathrm{389}}^1\times {\mathrm{43889}}^1$

素因数の和:44298

約数の個数: 48

約数和(自身を含む): 37383746400

約数和(自身を除く): 16640268885

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 389, 405, 1167, 1215, 1945, 3501, 5835, 10503, 17505, 31509, 43889, 52515, 94527, 131667, 157545, 219445, 395001, 472635, 658335, 1185003, 1975005, 3555009, 5925015, 10665027, 17072821, 17775045, 51218463, 53325135, 85364105, 153655389, 256092315, 460966167, 768276945, 1382898501, 2304830835, 4148695503, 6914492505, 20743477515]

約数ペア:

[(1, 20743477515), (3, 6914492505), (5, 4148695503), (9, 2304830835), (15, 1382898501), (27, 768276945), (45, 460966167), (81, 256092315), (135, 153655389), (243, 85364105), (389, 53325135), (405, 51218463), (1167, 17775045), (1215, 17072821), (1945, 10665027), (3501, 5925015), (5835, 3555009), (10503, 1975005), (17505, 1185003), (31509, 658335), (43889, 472635), (52515, 395001), (94527, 219445), (131667, 157545)]