21371105

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4591}}^1$

素因数の和:4629

約数の個数: 24

約数和(自身を含む): 31409280

約数和(自身を除く): 10038175

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4591, 4655, 22955, 32137, 87229, 160685, 224959, 436145, 610603, 1124795, 3053015, 4274221, 21371105]

約数ペア:

[(1, 21371105), (5, 4274221), (7, 3053015), (19, 1124795), (35, 610603), (49, 436145), (95, 224959), (133, 160685), (245, 87229), (665, 32137), (931, 22955), (4591, 4655)]