81789820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83459}}^1$

素因数の和:83482

約数の個数: 36

約数和(自身を含む): 199803240

約数和(自身を除く): 118013420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 83459, 166918, 333836, 417295, 584213, 834590, 1168426, 1669180, 2336852, 2921065, 4089491, 5842130, 8178982, 11684260, 16357964, 20447455, 40894910, 81789820]

約数ペア:

[(1, 81789820), (2, 40894910), (4, 20447455), (5, 16357964), (7, 11684260), (10, 8178982), (14, 5842130), (20, 4089491), (28, 2921065), (35, 2336852), (49, 1669180), (70, 1168426), (98, 834590), (140, 584213), (196, 417295), (245, 333836), (490, 166918), (980, 83459)]