20207960

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{907}}^1$

素因数の和:1475

約数の個数: 32

約数和(自身を含む): 45599760

約数和(自身を除く): 25391800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 907, 1114, 1814, 2228, 2785, 3628, 4456, 4535, 5570, 7256, 9070, 11140, 18140, 22280, 36280, 505199, 1010398, 2020796, 2525995, 4041592, 5051990, 10103980, 20207960]

約数ペア:

[(1, 20207960), (2, 10103980), (4, 5051990), (5, 4041592), (8, 2525995), (10, 2020796), (20, 1010398), (40, 505199), (557, 36280), (907, 22280), (1114, 18140), (1814, 11140), (2228, 9070), (2785, 7256), (3628, 5570), (4456, 4535)]