216400415

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{11471}}^1$

素因数の和:11508

約数の個数: 32

約数和(自身を含む): 330393600

約数和(自身を除く): 113993185

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 343, 385, 539, 1715, 2695, 3773, 11471, 18865, 57355, 80297, 126181, 401485, 562079, 630905, 883267, 2810395, 3934553, 4416335, 6182869, 19672765, 30914345, 43280083, 216400415]

約数ペア:

[(1, 216400415), (5, 43280083), (7, 30914345), (11, 19672765), (35, 6182869), (49, 4416335), (55, 3934553), (77, 2810395), (245, 883267), (343, 630905), (385, 562079), (539, 401485), (1715, 126181), (2695, 80297), (3773, 57355), (11471, 18865)]