221430657

素因数分解:

$3^1\times 7^2\times {\mathrm{1013}}^1\times {\mathrm{1487}}^1$

素因数の和:2517

約数の個数: 24

約数和(自身を含む): 344013696

約数和(自身を除く): 122583039

約数列:

[1, 3, 7, 21, 49, 147, 1013, 1487, 3039, 4461, 7091, 10409, 21273, 31227, 49637, 72863, 148911, 218589, 1506331, 4518993, 10544317, 31632951, 73810219, 221430657]

約数ペア:

[(1, 221430657), (3, 73810219), (7, 31632951), (21, 10544317), (49, 4518993), (147, 1506331), (1013, 218589), (1487, 148911), (3039, 72863), (4461, 49637), (7091, 31227), (10409, 21273)]