21984525

素因数分解:

$3^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{491}}^1$

素因数の和:706

約数の個数: 36

約数和(自身を含む): 39655200

約数和(自身を除く): 17670675

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 199, 225, 491, 597, 995, 1473, 1791, 2455, 2985, 4419, 4975, 7365, 8955, 12275, 14925, 22095, 36825, 44775, 97709, 110475, 293127, 488545, 879381, 1465635, 2442725, 4396905, 7328175, 21984525]

約数ペア:

[(1, 21984525), (3, 7328175), (5, 4396905), (9, 2442725), (15, 1465635), (25, 879381), (45, 488545), (75, 293127), (199, 110475), (225, 97709), (491, 44775), (597, 36825), (995, 22095), (1473, 14925), (1791, 12275), (2455, 8955), (2985, 7365), (4419, 4975)]