13281680

素因数分解:

$2^4\times 5^1\times {\mathrm{166021}}^1$

素因数の和:166034

約数の個数: 20

約数和(自身を含む): 30880092

約数和(自身を除く): 17598412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 166021, 332042, 664084, 830105, 1328168, 1660210, 2656336, 3320420, 6640840, 13281680]

約数ペア:

[(1, 13281680), (2, 6640840), (4, 3320420), (5, 2656336), (8, 1660210), (10, 1328168), (16, 830105), (20, 664084), (40, 332042), (80, 166021)]