128889243

素因数分解:

$3^2\times 7^1\times {\mathrm{557}}^1\times {\mathrm{3673}}^1$

素因数の和:4243

約数の個数: 24

約数和(自身を含む): 213209568

約数和(自身を除く): 84320325

約数列:

[1, 3, 7, 9, 21, 63, 557, 1671, 3673, 3899, 5013, 11019, 11697, 25711, 33057, 35091, 77133, 231399, 2045861, 6137583, 14321027, 18412749, 42963081, 128889243]

約数ペア:

[(1, 128889243), (3, 42963081), (7, 18412749), (9, 14321027), (21, 6137583), (63, 2045861), (557, 231399), (1671, 77133), (3673, 35091), (3899, 33057), (5013, 25711), (11019, 11697)]