21951475

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9649}}^1$

素因数の和:9679

約数の個数: 24

約数和(自身を含む): 33504800

約数和(自身を除く): 11553325

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9649, 48245, 67543, 125437, 241225, 337715, 627185, 878059, 1688575, 3135925, 4390295, 21951475]

約数ペア:

[(1, 21951475), (5, 4390295), (7, 3135925), (13, 1688575), (25, 878059), (35, 627185), (65, 337715), (91, 241225), (175, 125437), (325, 67543), (455, 48245), (2275, 9649)]