21018438

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1559}}^1$

素因数の和:1681

約数の個数: 48

約数和(自身を含む): 52565760

約数和(自身を除く): 31547322

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 107, 126, 214, 321, 642, 749, 963, 1498, 1559, 1926, 2247, 3118, 4494, 4677, 6741, 9354, 10913, 13482, 14031, 21826, 28062, 32739, 65478, 98217, 166813, 196434, 333626, 500439, 1000878, 1167691, 1501317, 2335382, 3002634, 3503073, 7006146, 10509219, 21018438]

約数ペア:

[(1, 21018438), (2, 10509219), (3, 7006146), (6, 3503073), (7, 3002634), (9, 2335382), (14, 1501317), (18, 1167691), (21, 1000878), (42, 500439), (63, 333626), (107, 196434), (126, 166813), (214, 98217), (321, 65478), (642, 32739), (749, 28062), (963, 21826), (1498, 14031), (1559, 13482), (1926, 10913), (2247, 9354), (3118, 6741), (4494, 4677)]