217873921

素因数分解:

${\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 242613504

約数和(自身を除く): 24739583

約数列:

[1, 17, 31, 83, 289, 293, 527, 1411, 2573, 4981, 8959, 9083, 23987, 24319, 43741, 84677, 154411, 413423, 743597, 753889, 2624987, 7028191, 12816113, 217873921]

約数ペア:

[(1, 217873921), (17, 12816113), (31, 7028191), (83, 2624987), (289, 753889), (293, 743597), (527, 413423), (1411, 154411), (2573, 84677), (4981, 43741), (8959, 24319), (9083, 23987)]