20166967540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{256121}}^1$

素因数の和:256288

約数の個数: 48

約数和(自身を含む): 44061179904

約数和(自身を除く): 23894212364

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 127, 155, 254, 310, 508, 620, 635, 1270, 2540, 3937, 7874, 15748, 19685, 39370, 78740, 256121, 512242, 1024484, 1280605, 2561210, 5122420, 7939751, 15879502, 31759004, 32527367, 39698755, 65054734, 79397510, 130109468, 158795020, 162636835, 325273670, 650547340, 1008348377, 2016696754, 4033393508, 5041741885, 10083483770, 20166967540]

約数ペア:

[(1, 20166967540), (2, 10083483770), (4, 5041741885), (5, 4033393508), (10, 2016696754), (20, 1008348377), (31, 650547340), (62, 325273670), (124, 162636835), (127, 158795020), (155, 130109468), (254, 79397510), (310, 65054734), (508, 39698755), (620, 32527367), (635, 31759004), (1270, 15879502), (2540, 7939751), (3937, 5122420), (7874, 2561210), (15748, 1280605), (19685, 1024484), (39370, 512242), (78740, 256121)]