21012984

素因数分解:

$2^3\times 3^2\times {\mathrm{23}}^1\times {\mathrm{12689}}^1$

素因数の和:12724

約数の個数: 48

約数和(自身を含む): 59389200

約数和(自身を除く): 38376216

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 23, 24, 36, 46, 69, 72, 92, 138, 184, 207, 276, 414, 552, 828, 1656, 12689, 25378, 38067, 50756, 76134, 101512, 114201, 152268, 228402, 291847, 304536, 456804, 583694, 875541, 913608, 1167388, 1751082, 2334776, 2626623, 3502164, 5253246, 7004328, 10506492, 21012984]

約数ペア:

[(1, 21012984), (2, 10506492), (3, 7004328), (4, 5253246), (6, 3502164), (8, 2626623), (9, 2334776), (12, 1751082), (18, 1167388), (23, 913608), (24, 875541), (36, 583694), (46, 456804), (69, 304536), (72, 291847), (92, 228402), (138, 152268), (184, 114201), (207, 101512), (276, 76134), (414, 50756), (552, 38067), (828, 25378), (1656, 12689)]