221479743

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 311247360

約数和(自身を除く): 89767617

約数列:

[1, 3, 37, 71, 111, 157, 179, 213, 471, 537, 2627, 5809, 6623, 7881, 11147, 12709, 17427, 19869, 28103, 33441, 38127, 84309, 412439, 470233, 1039811, 1237317, 1410699, 1995313, 3119433, 5985939, 73826581, 221479743]

約数ペア:

[(1, 221479743), (3, 73826581), (37, 5985939), (71, 3119433), (111, 1995313), (157, 1410699), (179, 1237317), (213, 1039811), (471, 470233), (537, 412439), (2627, 84309), (5809, 38127), (6623, 33441), (7881, 28103), (11147, 19869), (12709, 17427)]