640114839

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{260527}}^1$

素因数の和:260556

約数の個数: 32

約数和(自身を含む): 1167165440

約数和(自身を除く): 527050601

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 260527, 781581, 1823689, 2344743, 3386851, 5471067, 7034229, 10160553, 16413201, 23707957, 30481659, 49239603, 71123871, 91444977, 213371613, 640114839]

約数ペア:

[(1, 640114839), (3, 213371613), (7, 91444977), (9, 71123871), (13, 49239603), (21, 30481659), (27, 23707957), (39, 16413201), (63, 10160553), (91, 7034229), (117, 5471067), (189, 3386851), (273, 2344743), (351, 1823689), (819, 781581), (2457, 260527)]