31530177

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 57620160

約数和(自身を除く): 26089983

約数列:

[1, 3, 7, 9, 19, 21, 49, 53, 57, 63, 71, 133, 147, 159, 171, 213, 371, 399, 441, 477, 497, 639, 931, 1007, 1113, 1197, 1349, 1491, 2597, 2793, 3021, 3339, 3479, 3763, 4047, 4473, 7049, 7791, 8379, 9063, 9443, 10437, 11289, 12141, 21147, 23373, 26341, 28329, 31311, 33867, 49343, 63441, 66101, 71497, 79023, 84987, 148029, 184387, 198303, 214491, 237069, 444087, 500479, 553161, 594909, 643473, 1501437, 1659483, 3503353, 4504311, 10510059, 31530177]

約数ペア:

[(1, 31530177), (3, 10510059), (7, 4504311), (9, 3503353), (19, 1659483), (21, 1501437), (49, 643473), (53, 594909), (57, 553161), (63, 500479), (71, 444087), (133, 237069), (147, 214491), (159, 198303), (171, 184387), (213, 148029), (371, 84987), (399, 79023), (441, 71497), (477, 66101), (497, 63441), (639, 49343), (931, 33867), (1007, 31311), (1113, 28329), (1197, 26341), (1349, 23373), (1491, 21147), (2597, 12141), (2793, 11289), (3021, 10437), (3339, 9443), (3479, 9063), (3763, 8379), (4047, 7791), (4473, 7049)]