19852020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{379}}^1$

素因数の和:494

約数の個数: 96

約数和(自身を含む): 62563200

約数和(自身を除く): 42711180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 97, 108, 135, 180, 194, 270, 291, 379, 388, 485, 540, 582, 758, 873, 970, 1137, 1164, 1455, 1516, 1746, 1895, 1940, 2274, 2619, 2910, 3411, 3492, 3790, 4365, 4548, 5238, 5685, 5820, 6822, 7580, 8730, 10233, 10476, 11370, 13095, 13644, 17055, 17460, 20466, 22740, 26190, 34110, 36763, 40932, 51165, 52380, 68220, 73526, 102330, 110289, 147052, 183815, 204660, 220578, 330867, 367630, 441156, 551445, 661734, 735260, 992601, 1102890, 1323468, 1654335, 1985202, 2205780, 3308670, 3970404, 4963005, 6617340, 9926010, 19852020]

約数ペア:

[(1, 19852020), (2, 9926010), (3, 6617340), (4, 4963005), (5, 3970404), (6, 3308670), (9, 2205780), (10, 1985202), (12, 1654335), (15, 1323468), (18, 1102890), (20, 992601), (27, 735260), (30, 661734), (36, 551445), (45, 441156), (54, 367630), (60, 330867), (90, 220578), (97, 204660), (108, 183815), (135, 147052), (180, 110289), (194, 102330), (270, 73526), (291, 68220), (379, 52380), (388, 51165), (485, 40932), (540, 36763), (582, 34110), (758, 26190), (873, 22740), (970, 20466), (1137, 17460), (1164, 17055), (1455, 13644), (1516, 13095), (1746, 11370), (1895, 10476), (1940, 10233), (2274, 8730), (2619, 7580), (2910, 6822), (3411, 5820), (3492, 5685), (3790, 5238), (4365, 4548)]