215688005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{457}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 286693344

約数和(自身を除く): 71005339

約数列:

[1, 5, 13, 53, 65, 137, 265, 457, 685, 689, 1781, 2285, 3445, 5941, 7261, 8905, 24221, 29705, 36305, 62609, 94393, 121105, 313045, 314873, 471965, 813917, 1574365, 3318277, 4069585, 16591385, 43137601, 215688005]

約数ペア:

[(1, 215688005), (5, 43137601), (13, 16591385), (53, 4069585), (65, 3318277), (137, 1574365), (265, 813917), (457, 471965), (685, 314873), (689, 313045), (1781, 121105), (2285, 94393), (3445, 62609), (5941, 36305), (7261, 29705), (8905, 24221)]