21509332

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6781}}^1$

素因数の和:6859

約数の個数: 24

約数和(自身を含む): 41207432

約数和(自身を除く): 19698100

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6781, 13562, 27124, 88153, 176306, 352612, 413641, 827282, 1654564, 5377333, 10754666, 21509332]

約数ペア:

[(1, 21509332), (2, 10754666), (4, 5377333), (13, 1654564), (26, 827282), (52, 413641), (61, 352612), (122, 176306), (244, 88153), (793, 27124), (1586, 13562), (3172, 6781)]