2780720319

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{61519}}^1$

素因数の和:61615

約数の個数: 32

約数和(自身を含む): 4271948800

約数和(自身を除く): 1491228481

約数列:

[1, 3, 13, 19, 39, 57, 61, 183, 247, 741, 793, 1159, 2379, 3477, 15067, 45201, 61519, 184557, 799747, 1168861, 2399241, 3506583, 3752659, 11257977, 15195193, 45585579, 48784567, 71300521, 146353701, 213901563, 926906773, 2780720319]

約数ペア:

[(1, 2780720319), (3, 926906773), (13, 213901563), (19, 146353701), (39, 71300521), (57, 48784567), (61, 45585579), (183, 15195193), (247, 11257977), (741, 3752659), (793, 3506583), (1159, 2399241), (2379, 1168861), (3477, 799747), (15067, 184557), (45201, 61519)]