640921665

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{14831}}^1$

素因数の和:14949

約数の個数: 32

約数和(自身を含む): 1065056256

約数和(自身を除く): 424134591

約数列:

[1, 3, 5, 15, 43, 67, 129, 201, 215, 335, 645, 1005, 2881, 8643, 14405, 14831, 43215, 44493, 74155, 222465, 637733, 993677, 1913199, 2981031, 3188665, 4968385, 9565995, 14905155, 42728111, 128184333, 213640555, 640921665]

約数ペア:

[(1, 640921665), (3, 213640555), (5, 128184333), (15, 42728111), (43, 14905155), (67, 9565995), (129, 4968385), (201, 3188665), (215, 2981031), (335, 1913199), (645, 993677), (1005, 637733), (2881, 222465), (8643, 74155), (14405, 44493), (14831, 43215)]