19660456

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{521}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 38053800

約数和(自身を除く): 18393344

約数列:

[1, 2, 4, 8, 53, 89, 106, 178, 212, 356, 424, 521, 712, 1042, 2084, 4168, 4717, 9434, 18868, 27613, 37736, 46369, 55226, 92738, 110452, 185476, 220904, 370952, 2457557, 4915114, 9830228, 19660456]

約数ペア:

[(1, 19660456), (2, 9830228), (4, 4915114), (8, 2457557), (53, 370952), (89, 220904), (106, 185476), (178, 110452), (212, 92738), (356, 55226), (424, 46369), (521, 37736), (712, 27613), (1042, 18868), (2084, 9434), (4168, 4717)]