21448611

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{563}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 34110720

約数和(自身を除く): 12662109

約数列:

[1, 3, 9, 17, 27, 51, 83, 153, 249, 459, 563, 747, 1411, 1689, 2241, 4233, 5067, 9571, 12699, 15201, 28713, 38097, 46729, 86139, 140187, 258417, 420561, 794393, 1261683, 2383179, 7149537, 21448611]

約数ペア:

[(1, 21448611), (3, 7149537), (9, 2383179), (17, 1261683), (27, 794393), (51, 420561), (83, 258417), (153, 140187), (249, 86139), (459, 46729), (563, 38097), (747, 28713), (1411, 15201), (1689, 12699), (2241, 9571), (4233, 5067)]