21770015

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{727}}^1$

素因数の和:898

約数の個数: 16

約数和(自身を含む): 26889408

約数和(自身を除く): 5119393

約数列:

[1, 5, 53, 113, 265, 565, 727, 3635, 5989, 29945, 38531, 82151, 192655, 410755, 4354003, 21770015]

約数ペア:

[(1, 21770015), (5, 4354003), (53, 410755), (113, 192655), (265, 82151), (565, 38531), (727, 29945), (3635, 5989)]