18144760

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6389}}^1$

素因数の和:6471

約数の個数: 32

約数和(自身を含む): 41407200

約数和(自身を除く): 23262440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 6389, 12778, 25556, 31945, 51112, 63890, 127780, 255560, 453619, 907238, 1814476, 2268095, 3628952, 4536190, 9072380, 18144760]

約数ペア:

[(1, 18144760), (2, 9072380), (4, 4536190), (5, 3628952), (8, 2268095), (10, 1814476), (20, 907238), (40, 453619), (71, 255560), (142, 127780), (284, 63890), (355, 51112), (568, 31945), (710, 25556), (1420, 12778), (2840, 6389)]