20216385

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2377}}^1$

素因数の和:2404

約数の個数: 48

約数和(自身を含む): 41548416

約数和(自身を除く): 21332031

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2377, 2835, 7131, 8505, 11885, 16639, 21393, 35655, 49917, 64179, 83195, 106965, 149751, 192537, 249585, 320895, 449253, 577611, 748755, 962685, 1347759, 2246265, 2888055, 4043277, 6738795, 20216385]

約数ペア:

[(1, 20216385), (3, 6738795), (5, 4043277), (7, 2888055), (9, 2246265), (15, 1347759), (21, 962685), (27, 748755), (35, 577611), (45, 449253), (63, 320895), (81, 249585), (105, 192537), (135, 149751), (189, 106965), (243, 83195), (315, 64179), (405, 49917), (567, 35655), (945, 21393), (1215, 16639), (1701, 11885), (2377, 8505), (2835, 7131)]