19970291089

素因数分解:

$7^4\times {\mathrm{37}}^1\times {\mathrm{224797}}^1$

素因数の和:224862

約数の個数: 20

約数和(自身を含む): 23927049524

約数和(自身を除く): 3956758435

約数列:

[1, 7, 37, 49, 259, 343, 1813, 2401, 12691, 88837, 224797, 1573579, 8317489, 11015053, 58222423, 77105371, 407556961, 539737597, 2852898727, 19970291089]

約数ペア:

[(1, 19970291089), (7, 2852898727), (37, 539737597), (49, 407556961), (259, 77105371), (343, 58222423), (1813, 11015053), (2401, 8317489), (12691, 1573579), (88837, 224797)]