21296095

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:566

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 4831265

約数列:

[1, 5, 71, 239, 251, 355, 1195, 1255, 16969, 17821, 59989, 84845, 89105, 299945, 4259219, 21296095]

約数ペア:

[(1, 21296095), (5, 4259219), (71, 299945), (239, 89105), (251, 84845), (355, 59989), (1195, 17821), (1255, 16969)]