21834153

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 36900864

約数和(自身を除く): 15066711

約数列:

[1, 3, 9, 11, 23, 33, 43, 69, 99, 129, 207, 223, 253, 387, 473, 669, 759, 989, 1419, 2007, 2277, 2453, 2967, 4257, 5129, 7359, 8901, 9589, 10879, 15387, 22077, 28767, 32637, 46161, 56419, 86301, 97911, 105479, 169257, 220547, 316437, 507771, 661641, 949311, 1984923, 2426017, 7278051, 21834153]

約数ペア:

[(1, 21834153), (3, 7278051), (9, 2426017), (11, 1984923), (23, 949311), (33, 661641), (43, 507771), (69, 316437), (99, 220547), (129, 169257), (207, 105479), (223, 97911), (253, 86301), (387, 56419), (473, 46161), (669, 32637), (759, 28767), (989, 22077), (1419, 15387), (2007, 10879), (2277, 9589), (2453, 8901), (2967, 7359), (4257, 5129)]