18692920

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{839}}^1$

素因数の和:1407

約数の個数: 32

約数和(自身を含む): 42184800

約数和(自身を除く): 23491880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 839, 1114, 1678, 2228, 2785, 3356, 4195, 4456, 5570, 6712, 8390, 11140, 16780, 22280, 33560, 467323, 934646, 1869292, 2336615, 3738584, 4673230, 9346460, 18692920]

約数ペア:

[(1, 18692920), (2, 9346460), (4, 4673230), (5, 3738584), (8, 2336615), (10, 1869292), (20, 934646), (40, 467323), (557, 33560), (839, 22280), (1114, 16780), (1678, 11140), (2228, 8390), (2785, 6712), (3356, 5570), (4195, 4456)]