21717619

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 29362176

約数和(自身を除く): 7644557

約数列:

[1, 7, 11, 17, 47, 77, 119, 187, 329, 353, 517, 799, 1309, 2471, 3619, 3883, 5593, 6001, 8789, 16591, 27181, 42007, 61523, 66011, 116137, 182501, 282047, 462077, 1277507, 1974329, 3102517, 21717619]

約数ペア:

[(1, 21717619), (7, 3102517), (11, 1974329), (17, 1277507), (47, 462077), (77, 282047), (119, 182501), (187, 116137), (329, 66011), (353, 61523), (517, 42007), (799, 27181), (1309, 16591), (2471, 8789), (3619, 6001), (3883, 5593)]