21520235517

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{4978079}}^1$

素因数の和:4978224

約数の個数: 16

約数和(自身を含む): 31541114880

約数和(自身を除く): 10020879363

約数列:

[1, 3, 11, 33, 131, 393, 1441, 4323, 4978079, 14934237, 54758869, 164276607, 652128349, 1956385047, 7173411839, 21520235517]

約数ペア:

[(1, 21520235517), (3, 7173411839), (11, 1956385047), (33, 652128349), (131, 164276607), (393, 54758869), (1441, 14934237), (4323, 4978079)]