19917204

素因数分解:

$2^2\times 3^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{241}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 47811456

約数和(自身を除く): 27894252

約数列:

[1, 2, 3, 4, 6, 12, 71, 97, 142, 194, 213, 241, 284, 291, 388, 426, 482, 582, 723, 852, 964, 1164, 1446, 2892, 6887, 13774, 17111, 20661, 23377, 27548, 34222, 41322, 46754, 51333, 68444, 70131, 82644, 93508, 102666, 140262, 205332, 280524, 1659767, 3319534, 4979301, 6639068, 9958602, 19917204]

約数ペア:

[(1, 19917204), (2, 9958602), (3, 6639068), (4, 4979301), (6, 3319534), (12, 1659767), (71, 280524), (97, 205332), (142, 140262), (194, 102666), (213, 93508), (241, 82644), (284, 70131), (291, 68444), (388, 51333), (426, 46754), (482, 41322), (582, 34222), (723, 27548), (852, 23377), (964, 20661), (1164, 17111), (1446, 13774), (2892, 6887)]