19816918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:480

約数の個数: 32

約数和(自身を含む): 34020000

約数和(自身を除く): 14203082

約数列:

[1, 2, 11, 22, 29, 58, 89, 178, 319, 349, 638, 698, 979, 1958, 2581, 3839, 5162, 7678, 10121, 20242, 28391, 31061, 56782, 62122, 111331, 222662, 341671, 683342, 900769, 1801538, 9908459, 19816918]

約数ペア:

[(1, 19816918), (2, 9908459), (11, 1801538), (22, 900769), (29, 683342), (58, 341671), (89, 222662), (178, 111331), (319, 62122), (349, 56782), (638, 31061), (698, 28391), (979, 20242), (1958, 10121), (2581, 7678), (3839, 5162)]