21010185

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7411}}^1$

素因数の和:7435

約数の個数: 40

約数和(自身を含む): 43048896

約数和(自身を除く): 22038711

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7411, 22233, 37055, 51877, 66699, 111165, 155631, 200097, 259385, 333495, 466893, 600291, 778155, 1000485, 1400679, 2334465, 3001455, 4202037, 7003395, 21010185]

約数ペア:

[(1, 21010185), (3, 7003395), (5, 4202037), (7, 3001455), (9, 2334465), (15, 1400679), (21, 1000485), (27, 778155), (35, 600291), (45, 466893), (63, 333495), (81, 259385), (105, 200097), (135, 155631), (189, 111165), (315, 66699), (405, 51877), (567, 37055), (945, 22233), (2835, 7411)]