2643890

素因数分解:

$2^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{631}}^1$

素因数の和:1057

約数の個数: 16

約数和(自身を含む): 4777920

約数和(自身を除く): 2134030

約数列:

[1, 2, 5, 10, 419, 631, 838, 1262, 2095, 3155, 4190, 6310, 264389, 528778, 1321945, 2643890]

約数ペア:

[(1, 2643890), (2, 1321945), (5, 528778), (10, 264389), (419, 6310), (631, 4190), (838, 3155), (1262, 2095)]