17686221

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 27847680

約数和(自身を除く): 10161459

約数列:

[1, 3, 7, 21, 73, 83, 139, 219, 249, 417, 511, 581, 973, 1533, 1743, 2919, 6059, 10147, 11537, 18177, 30441, 34611, 42413, 71029, 80759, 127239, 213087, 242277, 842201, 2526603, 5895407, 17686221]

約数ペア:

[(1, 17686221), (3, 5895407), (7, 2526603), (21, 842201), (73, 242277), (83, 213087), (139, 127239), (219, 80759), (249, 71029), (417, 42413), (511, 34611), (581, 30441), (973, 18177), (1533, 11537), (1743, 10147), (2919, 6059)]