155821880

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^2\times {\mathrm{227}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 354852360

約数和(自身を除く): 199030480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 227, 262, 454, 524, 655, 908, 1048, 1135, 1310, 1816, 2270, 2620, 4540, 5240, 9080, 17161, 29737, 34322, 59474, 68644, 85805, 118948, 137288, 148685, 171610, 237896, 297370, 343220, 594740, 686440, 1189480, 3895547, 7791094, 15582188, 19477735, 31164376, 38955470, 77910940, 155821880]

約数ペア:

[(1, 155821880), (2, 77910940), (4, 38955470), (5, 31164376), (8, 19477735), (10, 15582188), (20, 7791094), (40, 3895547), (131, 1189480), (227, 686440), (262, 594740), (454, 343220), (524, 297370), (655, 237896), (908, 171610), (1048, 148685), (1135, 137288), (1310, 118948), (1816, 85805), (2270, 68644), (2620, 59474), (4540, 34322), (5240, 29737), (9080, 17161)]