81497920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{36383}}^1$

素因数の和:36407

約数の個数: 56

約数和(自身を含む): 221796864

約数和(自身を除く): 140298944

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 36383, 72766, 145532, 181915, 254681, 291064, 363830, 509362, 582128, 727660, 1018724, 1164256, 1273405, 1455320, 2037448, 2328512, 2546810, 2910640, 4074896, 5093620, 5821280, 8149792, 10187240, 11642560, 16299584, 20374480, 40748960, 81497920]

約数ペア:

[(1, 81497920), (2, 40748960), (4, 20374480), (5, 16299584), (7, 11642560), (8, 10187240), (10, 8149792), (14, 5821280), (16, 5093620), (20, 4074896), (28, 2910640), (32, 2546810), (35, 2328512), (40, 2037448), (56, 1455320), (64, 1273405), (70, 1164256), (80, 1018724), (112, 727660), (140, 582128), (160, 509362), (224, 363830), (280, 291064), (320, 254681), (448, 181915), (560, 145532), (1120, 72766), (2240, 36383)]