19677040

素因数分解:

$2^4\times 5^1\times {\mathrm{245963}}^1$

素因数の和:245976

約数の個数: 20

約数和(自身を含む): 45749304

約数和(自身を除く): 26072264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245963, 491926, 983852, 1229815, 1967704, 2459630, 3935408, 4919260, 9838520, 19677040]

約数ペア:

[(1, 19677040), (2, 9838520), (4, 4919260), (5, 3935408), (8, 2459630), (10, 1967704), (16, 1229815), (20, 983852), (40, 491926), (80, 245963)]