20890890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2393}}^1$

素因数の和:2503

約数の個数: 48

約数和(自身を含む): 54899208

約数和(自身を除く): 34008318

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 97, 194, 291, 485, 582, 873, 970, 1455, 1746, 2393, 2910, 4365, 4786, 7179, 8730, 11965, 14358, 21537, 23930, 35895, 43074, 71790, 107685, 215370, 232121, 464242, 696363, 1160605, 1392726, 2089089, 2321210, 3481815, 4178178, 6963630, 10445445, 20890890]

約数ペア:

[(1, 20890890), (2, 10445445), (3, 6963630), (5, 4178178), (6, 3481815), (9, 2321210), (10, 2089089), (15, 1392726), (18, 1160605), (30, 696363), (45, 464242), (90, 232121), (97, 215370), (194, 107685), (291, 71790), (485, 43074), (582, 35895), (873, 23930), (970, 21537), (1455, 14358), (1746, 11965), (2393, 8730), (2910, 7179), (4365, 4786)]