18989918

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:512

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 12943522

約数列:

[1, 2, 17, 31, 34, 43, 62, 86, 419, 527, 731, 838, 1054, 1333, 1462, 2666, 7123, 12989, 14246, 18017, 22661, 25978, 36034, 45322, 220813, 306289, 441626, 558527, 612578, 1117054, 9494959, 18989918]

約数ペア:

[(1, 18989918), (2, 9494959), (17, 1117054), (31, 612578), (34, 558527), (43, 441626), (62, 306289), (86, 220813), (419, 45322), (527, 36034), (731, 25978), (838, 22661), (1054, 18017), (1333, 14246), (1462, 12989), (2666, 7123)]