78167691

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^2\times {\mathrm{491}}^1$

素因数の和:549

約数の個数: 54

約数和(自身を含む): 138901932

約数和(自身を除く): 60734241

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 361, 399, 441, 491, 931, 1083, 1197, 1473, 2527, 2793, 3249, 3437, 4419, 7581, 8379, 9329, 10311, 17689, 22743, 24059, 27987, 30933, 53067, 65303, 72177, 83961, 159201, 177251, 195909, 216531, 457121, 531753, 587727, 1240757, 1371363, 1595259, 3722271, 4114089, 8685299, 11166813, 26055897, 78167691]

約数ペア:

[(1, 78167691), (3, 26055897), (7, 11166813), (9, 8685299), (19, 4114089), (21, 3722271), (49, 1595259), (57, 1371363), (63, 1240757), (133, 587727), (147, 531753), (171, 457121), (361, 216531), (399, 195909), (441, 177251), (491, 159201), (931, 83961), (1083, 72177), (1197, 65303), (1473, 53067), (2527, 30933), (2793, 27987), (3249, 24059), (3437, 22743), (4419, 17689), (7581, 10311), (8379, 9329)]