21595287

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{251}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 35126784

約数和(自身を除く): 13531497

約数列:

[1, 3, 7, 17, 21, 51, 119, 241, 251, 357, 723, 753, 1687, 1757, 4097, 4267, 5061, 5271, 12291, 12801, 28679, 29869, 60491, 86037, 89607, 181473, 423437, 1028347, 1270311, 3085041, 7198429, 21595287]

約数ペア:

[(1, 21595287), (3, 7198429), (7, 3085041), (17, 1270311), (21, 1028347), (51, 423437), (119, 181473), (241, 89607), (251, 86037), (357, 60491), (723, 29869), (753, 28679), (1687, 12801), (1757, 12291), (4097, 5271), (4267, 5061)]