21039273

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 33860736

約数和(自身を除く): 12821463

約数列:

[1, 3, 9, 23, 37, 41, 67, 69, 111, 123, 201, 207, 333, 369, 603, 851, 943, 1517, 1541, 2479, 2553, 2747, 2829, 4551, 4623, 7437, 7659, 8241, 8487, 13653, 13869, 22311, 24723, 34891, 57017, 63181, 101639, 104673, 171051, 189543, 304917, 314019, 513153, 568629, 914751, 2337697, 7013091, 21039273]

約数ペア:

[(1, 21039273), (3, 7013091), (9, 2337697), (23, 914751), (37, 568629), (41, 513153), (67, 314019), (69, 304917), (111, 189543), (123, 171051), (201, 104673), (207, 101639), (333, 63181), (369, 57017), (603, 34891), (851, 24723), (943, 22311), (1517, 13869), (1541, 13653), (2479, 8487), (2553, 8241), (2747, 7659), (2829, 7437), (4551, 4623)]