21804795

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3167}}^1$

素因数の和:3201

約数の個数: 40

約数和(自身を含む): 41399424

約数和(自身を除く): 19594629

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 3167, 6885, 9501, 15835, 28503, 47505, 53839, 85509, 142515, 161517, 256527, 269195, 427545, 484551, 807585, 1282635, 1453653, 2422755, 4360959, 7268265, 21804795]

約数ペア:

[(1, 21804795), (3, 7268265), (5, 4360959), (9, 2422755), (15, 1453653), (17, 1282635), (27, 807585), (45, 484551), (51, 427545), (81, 269195), (85, 256527), (135, 161517), (153, 142515), (255, 85509), (405, 53839), (459, 47505), (765, 28503), (1377, 15835), (2295, 9501), (3167, 6885)]