21551211

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{487}}^1$

素因数の和:656

約数の個数: 32

約数和(自身を含む): 35136000

約数和(自身を除く): 13584789

約数列:

[1, 3, 9, 11, 27, 33, 99, 149, 297, 447, 487, 1341, 1461, 1639, 4023, 4383, 4917, 5357, 13149, 14751, 16071, 44253, 48213, 72563, 144639, 217689, 653067, 798193, 1959201, 2394579, 7183737, 21551211]

約数ペア:

[(1, 21551211), (3, 7183737), (9, 2394579), (11, 1959201), (27, 798193), (33, 653067), (99, 217689), (149, 144639), (297, 72563), (447, 48213), (487, 44253), (1341, 16071), (1461, 14751), (1639, 13149), (4023, 5357), (4383, 4917)]