80850740

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 173107200

約数和(自身を除く): 92256460

約数列:

[1, 2, 4, 5, 10, 20, 127, 139, 229, 254, 278, 458, 508, 556, 635, 695, 916, 1145, 1270, 1390, 2290, 2540, 2780, 4580, 17653, 29083, 31831, 35306, 58166, 63662, 70612, 88265, 116332, 127324, 145415, 159155, 176530, 290830, 318310, 353060, 581660, 636620, 4042537, 8085074, 16170148, 20212685, 40425370, 80850740]

約数ペア:

[(1, 80850740), (2, 40425370), (4, 20212685), (5, 16170148), (10, 8085074), (20, 4042537), (127, 636620), (139, 581660), (229, 353060), (254, 318310), (278, 290830), (458, 176530), (508, 159155), (556, 145415), (635, 127324), (695, 116332), (916, 88265), (1145, 70612), (1270, 63662), (1390, 58166), (2290, 35306), (2540, 31831), (2780, 29083), (4580, 17653)]