2159140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1213}}^1$

素因数の和:1311

約数の個数: 24

約数和(自身を含む): 4588920

約数和(自身を除く): 2429780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1213, 1780, 2426, 4852, 6065, 12130, 24260, 107957, 215914, 431828, 539785, 1079570, 2159140]

約数ペア:

[(1, 2159140), (2, 1079570), (4, 539785), (5, 431828), (10, 215914), (20, 107957), (89, 24260), (178, 12130), (356, 6065), (445, 4852), (890, 2426), (1213, 1780)]