20367280

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8779}}^1$

素因数の和:8821

約数の個数: 40

約数和(自身を含む): 48992400

約数和(自身を除く): 28625120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8779, 17558, 35116, 43895, 70232, 87790, 140464, 175580, 254591, 351160, 509182, 702320, 1018364, 1272955, 2036728, 2545910, 4073456, 5091820, 10183640, 20367280]

約数ペア:

[(1, 20367280), (2, 10183640), (4, 5091820), (5, 4073456), (8, 2545910), (10, 2036728), (16, 1272955), (20, 1018364), (29, 702320), (40, 509182), (58, 351160), (80, 254591), (116, 175580), (145, 140464), (232, 87790), (290, 70232), (464, 43895), (580, 35116), (1160, 17558), (2320, 8779)]