31891329

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 51480000

約数和(自身を除く): 19588671

約数列:

[1, 3, 9, 19, 29, 57, 59, 87, 109, 171, 177, 261, 327, 531, 551, 981, 1121, 1653, 1711, 2071, 3161, 3363, 4959, 5133, 6213, 6431, 9483, 10089, 15399, 18639, 19293, 28449, 32509, 57879, 60059, 97527, 122189, 180177, 186499, 292581, 366567, 540531, 559497, 1099701, 1678491, 3543481, 10630443, 31891329]

約数ペア:

[(1, 31891329), (3, 10630443), (9, 3543481), (19, 1678491), (29, 1099701), (57, 559497), (59, 540531), (87, 366567), (109, 292581), (171, 186499), (177, 180177), (261, 122189), (327, 97527), (531, 60059), (551, 57879), (981, 32509), (1121, 28449), (1653, 19293), (1711, 18639), (2071, 15399), (3161, 10089), (3363, 9483), (4959, 6431), (5133, 6213)]