20129121880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71889721}}^1$

素因数の和:71889739

約数の個数: 32

約数和(自身を含む): 51760599840

約数和(自身を除く): 31631477960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71889721, 143779442, 287558884, 359448605, 503228047, 575117768, 718897210, 1006456094, 1437794420, 2012912188, 2516140235, 2875588840, 4025824376, 5032280470, 10064560940, 20129121880]

約数ペア:

[(1, 20129121880), (2, 10064560940), (4, 5032280470), (5, 4025824376), (7, 2875588840), (8, 2516140235), (10, 2012912188), (14, 1437794420), (20, 1006456094), (28, 718897210), (35, 575117768), (40, 503228047), (56, 359448605), (70, 287558884), (140, 143779442), (280, 71889721)]