81507741

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{997}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 132215040

約数和(自身を除く): 50707299

約数列:

[1, 3, 7, 17, 21, 51, 119, 229, 357, 687, 997, 1603, 2991, 3893, 4809, 6979, 11679, 16949, 20937, 27251, 50847, 81753, 118643, 228313, 355929, 684939, 1598191, 3881321, 4794573, 11643963, 27169247, 81507741]

約数ペア:

[(1, 81507741), (3, 27169247), (7, 11643963), (17, 4794573), (21, 3881321), (51, 1598191), (119, 684939), (229, 355929), (357, 228313), (687, 118643), (997, 81753), (1603, 50847), (2991, 27251), (3893, 20937), (4809, 16949), (6979, 11679)]