20644336

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1151}}^1$

素因数の和:1237

約数の個数: 40

約数和(自身を含む): 42854400

約数和(自身を除く): 22210064

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 118, 152, 236, 304, 472, 944, 1121, 1151, 2242, 2302, 4484, 4604, 8968, 9208, 17936, 18416, 21869, 43738, 67909, 87476, 135818, 174952, 271636, 349904, 543272, 1086544, 1290271, 2580542, 5161084, 10322168, 20644336]

約数ペア:

[(1, 20644336), (2, 10322168), (4, 5161084), (8, 2580542), (16, 1290271), (19, 1086544), (38, 543272), (59, 349904), (76, 271636), (118, 174952), (152, 135818), (236, 87476), (304, 67909), (472, 43738), (944, 21869), (1121, 18416), (1151, 17936), (2242, 9208), (2302, 8968), (4484, 4604)]