280390448

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{70949}}^1$

素因数の和:70989

約数の個数: 40

約数和(自身を含む): 615846000

約数和(自身を除く): 335455552

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 70949, 141898, 283796, 567592, 922337, 1135184, 1348031, 1844674, 2696062, 3689348, 5392124, 7378696, 10784248, 14757392, 17524403, 21568496, 35048806, 70097612, 140195224, 280390448]

約数ペア:

[(1, 280390448), (2, 140195224), (4, 70097612), (8, 35048806), (13, 21568496), (16, 17524403), (19, 14757392), (26, 10784248), (38, 7378696), (52, 5392124), (76, 3689348), (104, 2696062), (152, 1844674), (208, 1348031), (247, 1135184), (304, 922337), (494, 567592), (988, 283796), (1976, 141898), (3952, 70949)]