640717

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:228

約数の個数: 16

約数和(自身を含む): 819072

約数和(自身を除く): 178355

約数列:

[1, 7, 11, 53, 77, 157, 371, 583, 1099, 1727, 4081, 8321, 12089, 58247, 91531, 640717]

約数ペア:

[(1, 640717), (7, 91531), (11, 58247), (53, 12089), (77, 8321), (157, 4081), (371, 1727), (583, 1099)]