2078173880

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{123407}}^1$

素因数の和:123839

約数の個数: 32

約数和(自身を含む): 4687035840

約数和(自身を除く): 2608861960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 16840, 123407, 246814, 493628, 617035, 987256, 1234070, 2468140, 4936280, 51954347, 103908694, 207817388, 259771735, 415634776, 519543470, 1039086940, 2078173880]

約数ペア:

[(1, 2078173880), (2, 1039086940), (4, 519543470), (5, 415634776), (8, 259771735), (10, 207817388), (20, 103908694), (40, 51954347), (421, 4936280), (842, 2468140), (1684, 1234070), (2105, 987256), (3368, 617035), (4210, 493628), (8420, 246814), (16840, 123407)]