1380149770

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{344177}}^1$

素因数の和:344585

約数の個数: 16

約数和(自身を含む): 2490472008

約数和(自身を除く): 1110322238

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 344177, 688354, 1720885, 3441770, 138014977, 276029954, 690074885, 1380149770]

約数ペア:

[(1, 1380149770), (2, 690074885), (5, 276029954), (10, 138014977), (401, 3441770), (802, 1720885), (2005, 688354), (4010, 344177)]