21291240087

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{379909}}^1$

素因数の和:380407

約数の個数: 24

約数和(自身を含む): 33188937600

約数和(自身を除く): 11897697513

約数列:

[1, 3, 9, 13, 39, 117, 479, 1437, 4311, 6227, 18681, 56043, 379909, 1139727, 3419181, 4938817, 14816451, 44449353, 181976411, 545929233, 1637787699, 2365693343, 7097080029, 21291240087]

約数ペア:

[(1, 21291240087), (3, 7097080029), (9, 2365693343), (13, 1637787699), (39, 545929233), (117, 181976411), (479, 44449353), (1437, 14816451), (4311, 4938817), (6227, 3419181), (18681, 1139727), (56043, 379909)]