21507635

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1\times {\mathrm{631}}^1$

素因数の和:1054

約数の個数: 16

約数和(自身を含む): 27438912

約数和(自身を除く): 5931277

約数列:

[1, 5, 17, 85, 401, 631, 2005, 3155, 6817, 10727, 34085, 53635, 253031, 1265155, 4301527, 21507635]

約数ペア:

[(1, 21507635), (5, 4301527), (17, 1265155), (85, 253031), (401, 53635), (631, 34085), (2005, 10727), (3155, 6817)]