28678258

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{823}}^1$

素因数の和:982

約数の個数: 32

約数和(自身を含む): 52208640

約数和(自身を除く): 23530382

約数列:

[1, 2, 7, 14, 19, 38, 131, 133, 262, 266, 823, 917, 1646, 1834, 2489, 4978, 5761, 11522, 15637, 17423, 31274, 34846, 107813, 109459, 215626, 218918, 754691, 1509382, 2048447, 4096894, 14339129, 28678258]

約数ペア:

[(1, 28678258), (2, 14339129), (7, 4096894), (14, 2048447), (19, 1509382), (38, 754691), (131, 218918), (133, 215626), (262, 109459), (266, 107813), (823, 34846), (917, 31274), (1646, 17423), (1834, 15637), (2489, 11522), (4978, 5761)]