21664503

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2011}}^1$

素因数の和:2049

約数の個数: 40

約数和(自身を含む): 38952320

約数和(自身を除く): 17287817

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 2011, 3591, 6033, 10773, 14077, 18099, 38209, 42231, 54297, 114627, 126693, 162891, 267463, 343881, 380079, 802389, 1031643, 1140237, 2407167, 3094929, 7221501, 21664503]

約数ペア:

[(1, 21664503), (3, 7221501), (7, 3094929), (9, 2407167), (19, 1140237), (21, 1031643), (27, 802389), (57, 380079), (63, 343881), (81, 267463), (133, 162891), (171, 126693), (189, 114627), (399, 54297), (513, 42231), (567, 38209), (1197, 18099), (1539, 14077), (2011, 10773), (3591, 6033)]