80290420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{81929}}^1$

素因数の和:81952

約数の個数: 36

約数和(自身を含む): 196140420

約数和(自身を除く): 115850000

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 81929, 163858, 327716, 409645, 573503, 819290, 1147006, 1638580, 2294012, 2867515, 4014521, 5735030, 8029042, 11470060, 16058084, 20072605, 40145210, 80290420]

約数ペア:

[(1, 80290420), (2, 40145210), (4, 20072605), (5, 16058084), (7, 11470060), (10, 8029042), (14, 5735030), (20, 4014521), (28, 2867515), (35, 2294012), (49, 1638580), (70, 1147006), (98, 819290), (140, 573503), (196, 409645), (245, 327716), (490, 163858), (980, 81929)]