21152301

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 10781139

約数列:

[1, 3, 17, 19, 51, 57, 83, 249, 263, 323, 789, 969, 1411, 1577, 4233, 4471, 4731, 4997, 13413, 14991, 21829, 26809, 65487, 80427, 84949, 254847, 371093, 414751, 1113279, 1244253, 7050767, 21152301]

約数ペア:

[(1, 21152301), (3, 7050767), (17, 1244253), (19, 1113279), (51, 414751), (57, 371093), (83, 254847), (249, 84949), (263, 80427), (323, 65487), (789, 26809), (969, 21829), (1411, 14991), (1577, 13413), (4233, 4997), (4471, 4731)]