21408828

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{907}}^1$

素因数の和:1202

約数の個数: 48

約数和(自身を含む): 57356544

約数和(自身を除く): 35947716

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 281, 562, 843, 907, 1124, 1686, 1814, 1967, 2721, 3372, 3628, 3934, 5442, 5901, 6349, 7868, 10884, 11802, 12698, 19047, 23604, 25396, 38094, 76188, 254867, 509734, 764601, 1019468, 1529202, 1784069, 3058404, 3568138, 5352207, 7136276, 10704414, 21408828]

約数ペア:

[(1, 21408828), (2, 10704414), (3, 7136276), (4, 5352207), (6, 3568138), (7, 3058404), (12, 1784069), (14, 1529202), (21, 1019468), (28, 764601), (42, 509734), (84, 254867), (281, 76188), (562, 38094), (843, 25396), (907, 23604), (1124, 19047), (1686, 12698), (1814, 11802), (1967, 10884), (2721, 7868), (3372, 6349), (3628, 5901), (3934, 5442)]