21659890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{7547}}^1$

素因数の和:7602

約数の個数: 32

約数和(自身を含む): 45650304

約数和(自身を除く): 23990414

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 70, 82, 205, 287, 410, 574, 1435, 2870, 7547, 15094, 37735, 52829, 75470, 105658, 264145, 309427, 528290, 618854, 1547135, 2165989, 3094270, 4331978, 10829945, 21659890]

約数ペア:

[(1, 21659890), (2, 10829945), (5, 4331978), (7, 3094270), (10, 2165989), (14, 1547135), (35, 618854), (41, 528290), (70, 309427), (82, 264145), (205, 105658), (287, 75470), (410, 52829), (574, 37735), (1435, 15094), (2870, 7547)]