20958490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4217}}^1$

素因数の和:4302

約数の個数: 32

約数和(自身を含む): 43732224

約数和(自身を除く): 22773734

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4217, 4970, 8434, 21085, 29519, 42170, 59038, 147595, 295190, 299407, 598814, 1497035, 2095849, 2994070, 4191698, 10479245, 20958490]

約数ペア:

[(1, 20958490), (2, 10479245), (5, 4191698), (7, 2994070), (10, 2095849), (14, 1497035), (35, 598814), (70, 299407), (71, 295190), (142, 147595), (355, 59038), (497, 42170), (710, 29519), (994, 21085), (2485, 8434), (4217, 4970)]