213215105

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{1291}}^1$

素因数の和:1409

約数の個数: 32

約数和(自身を含む): 284653440

約数和(自身を除く): 71438335

約数列:

[1, 5, 17, 29, 67, 85, 145, 335, 493, 1139, 1291, 1943, 2465, 5695, 6455, 9715, 21947, 33031, 37439, 86497, 109735, 165155, 187195, 432485, 636463, 1470449, 2508413, 3182315, 7352245, 12542065, 42643021, 213215105]

約数ペア:

[(1, 213215105), (5, 42643021), (17, 12542065), (29, 7352245), (67, 3182315), (85, 2508413), (145, 1470449), (335, 636463), (493, 432485), (1139, 187195), (1291, 165155), (1943, 109735), (2465, 86497), (5695, 37439), (6455, 33031), (9715, 21947)]