21287268

素因数分解:

$2^2\times 3^2\times {\mathrm{541}}^1\times {\mathrm{1093}}^1$

素因数の和:1644

約数の個数: 36

約数和(自身を含む): 53958268

約数和(自身を除く): 32671000

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 541, 1082, 1093, 1623, 2164, 2186, 3246, 3279, 4372, 4869, 6492, 6558, 9738, 9837, 13116, 19476, 19674, 39348, 591313, 1182626, 1773939, 2365252, 3547878, 5321817, 7095756, 10643634, 21287268]

約数ペア:

[(1, 21287268), (2, 10643634), (3, 7095756), (4, 5321817), (6, 3547878), (9, 2365252), (12, 1773939), (18, 1182626), (36, 591313), (541, 39348), (1082, 19674), (1093, 19476), (1623, 13116), (2164, 9837), (2186, 9738), (3246, 6558), (3279, 6492), (4372, 4869)]