2123540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1193}}^1$

素因数の和:1291

約数の個数: 24

約数和(自身を含む): 4513320

約数和(自身を除く): 2389780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1193, 1780, 2386, 4772, 5965, 11930, 23860, 106177, 212354, 424708, 530885, 1061770, 2123540]

約数ペア:

[(1, 2123540), (2, 1061770), (4, 530885), (5, 424708), (10, 212354), (20, 106177), (89, 23860), (178, 11930), (356, 5965), (445, 4772), (890, 2386), (1193, 1780)]