278346380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{82351}}^1$

素因数の和:82386

約数の個数: 36

約数和(自身を含む): 632957472

約数和(自身を除く): 354611092

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 82351, 164702, 329404, 411755, 823510, 1070563, 1647020, 2141126, 4282252, 5352815, 10705630, 13917319, 21411260, 27834638, 55669276, 69586595, 139173190, 278346380]

約数ペア:

[(1, 278346380), (2, 139173190), (4, 69586595), (5, 55669276), (10, 27834638), (13, 21411260), (20, 13917319), (26, 10705630), (52, 5352815), (65, 4282252), (130, 2141126), (169, 1647020), (260, 1070563), (338, 823510), (676, 411755), (845, 329404), (1690, 164702), (3380, 82351)]