21335697

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:139

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 15159663

約数列:

[1, 3, 9, 17, 23, 27, 43, 47, 51, 69, 129, 141, 153, 207, 387, 391, 423, 459, 621, 731, 799, 989, 1081, 1161, 1173, 1269, 2021, 2193, 2397, 2967, 3243, 3519, 6063, 6579, 7191, 8901, 9729, 10557, 16813, 18189, 18377, 19737, 21573, 26703, 29187, 34357, 46483, 50439, 54567, 55131, 103071, 139449, 151317, 165393, 309213, 418347, 453951, 496179, 790211, 927639, 1255041, 2370633, 7111899, 21335697]

約数ペア:

[(1, 21335697), (3, 7111899), (9, 2370633), (17, 1255041), (23, 927639), (27, 790211), (43, 496179), (47, 453951), (51, 418347), (69, 309213), (129, 165393), (141, 151317), (153, 139449), (207, 103071), (387, 55131), (391, 54567), (423, 50439), (459, 46483), (621, 34357), (731, 29187), (799, 26703), (989, 21573), (1081, 19737), (1161, 18377), (1173, 18189), (1269, 16813), (2021, 10557), (2193, 9729), (2397, 8901), (2967, 7191), (3243, 6579), (3519, 6063)]