2639740

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1483}}^1$

素因数の和:1581

約数の個数: 24

約数和(自身を含む): 5609520

約数和(自身を除く): 2969780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1483, 1780, 2966, 5932, 7415, 14830, 29660, 131987, 263974, 527948, 659935, 1319870, 2639740]

約数ペア:

[(1, 2639740), (2, 1319870), (4, 659935), (5, 527948), (10, 263974), (20, 131987), (89, 29660), (178, 14830), (356, 7415), (445, 5932), (890, 2966), (1483, 1780)]