21018354

素因数分解:

$2^1\times 3^1\times 7^4\times {\mathrm{1459}}^1$

素因数の和:1492

約数の個数: 40

約数和(自身を含む): 49073520

約数和(自身を除く): 28055166

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 343, 686, 1029, 1459, 2058, 2401, 2918, 4377, 4802, 7203, 8754, 10213, 14406, 20426, 30639, 61278, 71491, 142982, 214473, 428946, 500437, 1000874, 1501311, 3002622, 3503059, 7006118, 10509177, 21018354]

約数ペア:

[(1, 21018354), (2, 10509177), (3, 7006118), (6, 3503059), (7, 3002622), (14, 1501311), (21, 1000874), (42, 500437), (49, 428946), (98, 214473), (147, 142982), (294, 71491), (343, 61278), (686, 30639), (1029, 20426), (1459, 14406), (2058, 10213), (2401, 8754), (2918, 7203), (4377, 4802)]