1261891910

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1157699}}^1$

素因数の和:1157815

約数の個数: 16

約数和(自身を含む): 2292246000

約数和(自身を除く): 1030354090

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 1157699, 2315398, 5788495, 11576990, 126189191, 252378382, 630945955, 1261891910]

約数ペア:

[(1, 1261891910), (2, 630945955), (5, 252378382), (10, 126189191), (109, 11576990), (218, 5788495), (545, 2315398), (1090, 1157699)]