647942733

素因数分解:

$3^5\times {\mathrm{137}}^1\times {\mathrm{19463}}^1$

素因数の和:19615

約数の個数: 24

約数和(自身を含む): 977715648

約数和(自身を除く): 329772915

約数列:

[1, 3, 9, 27, 81, 137, 243, 411, 1233, 3699, 11097, 19463, 33291, 58389, 175167, 525501, 1576503, 2666431, 4729509, 7999293, 23997879, 71993637, 215980911, 647942733]

約数ペア:

[(1, 647942733), (3, 215980911), (9, 71993637), (27, 23997879), (81, 7999293), (137, 4729509), (243, 2666431), (411, 1576503), (1233, 525501), (3699, 175167), (11097, 58389), (19463, 33291)]