217072009

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{8219}}^1$

素因数の和:8258

約数の個数: 20

約数和(自身を含む): 276290640

約数和(自身を除く): 59218631

約数列:

[1, 7, 11, 49, 77, 343, 539, 2401, 3773, 8219, 26411, 57533, 90409, 402731, 632863, 2819117, 4430041, 19733819, 31010287, 217072009]

約数ペア:

[(1, 217072009), (7, 31010287), (11, 19733819), (49, 4430041), (77, 2819117), (343, 632863), (539, 402731), (2401, 90409), (3773, 57533), (8219, 26411)]