21282509120

素因数分解:

$2^6\times 5^1\times {\mathrm{66507841}}^1$

素因数の和:66507858

約数の個数: 28

約数和(自身を含む): 50678975604

約数和(自身を除く): 29396466484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66507841, 133015682, 266031364, 332539205, 532062728, 665078410, 1064125456, 1330156820, 2128250912, 2660313640, 4256501824, 5320627280, 10641254560, 21282509120]

約数ペア:

[(1, 21282509120), (2, 10641254560), (4, 5320627280), (5, 4256501824), (8, 2660313640), (10, 2128250912), (16, 1330156820), (20, 1064125456), (32, 665078410), (40, 532062728), (64, 332539205), (80, 266031364), (160, 133015682), (320, 66507841)]