21231576

素因数分解:

$2^3\times 3^2\times {\mathrm{23}}^1\times {\mathrm{12821}}^1$

素因数の和:12856

約数の個数: 48

約数和(自身を含む): 60006960

約数和(自身を除く): 38775384

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, 12821, 25642, 38463, 51284, 76926, 102568, 115389, 153852, 230778, 294883, 307704, 461556, 589766, 884649, 923112, 1179532, 1769298, 2359064, 2653947, 3538596, 5307894, 7077192, 10615788, 21231576]

約数ペア:

[(1, 21231576), (2, 10615788), (3, 7077192), (4, 5307894), (6, 3538596), (8, 2653947), (9, 2359064), (12, 1769298), (18, 1179532), (23, 923112), (24, 884649), (36, 589766), (46, 461556), (69, 307704), (72, 294883), (92, 230778), (138, 153852), (184, 115389), (207, 102568), (276, 76926), (414, 51284), (552, 38463), (828, 25642), (1656, 12821)]