21047650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{32381}}^1$

素因数の和:32406

約数の個数: 24

約数和(自身を含む): 42161364

約数和(自身を除く): 21113714

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 32381, 64762, 161905, 323810, 420953, 809525, 841906, 1619050, 2104765, 4209530, 10523825, 21047650]

約数ペア:

[(1, 21047650), (2, 10523825), (5, 4209530), (10, 2104765), (13, 1619050), (25, 841906), (26, 809525), (50, 420953), (65, 323810), (130, 161905), (325, 64762), (650, 32381)]