28118391

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{997}}^1$

素因数の和:1103

約数の個数: 32

約数和(自身を含む): 45987840

約数和(自身を除く): 17869449

約数列:

[1, 3, 7, 17, 21, 51, 79, 119, 237, 357, 553, 997, 1343, 1659, 2991, 4029, 6979, 9401, 16949, 20937, 28203, 50847, 78763, 118643, 236289, 355929, 551341, 1338971, 1654023, 4016913, 9372797, 28118391]

約数ペア:

[(1, 28118391), (3, 9372797), (7, 4016913), (17, 1654023), (21, 1338971), (51, 551341), (79, 355929), (119, 236289), (237, 118643), (357, 78763), (553, 50847), (997, 28203), (1343, 20937), (1659, 16949), (2991, 9401), (4029, 6979)]