20747060

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 45534720

約数和(自身を除く): 24787660

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 109, 124, 155, 218, 307, 310, 436, 545, 614, 620, 1090, 1228, 1535, 2180, 3070, 3379, 6140, 6758, 9517, 13516, 16895, 19034, 33463, 33790, 38068, 47585, 66926, 67580, 95170, 133852, 167315, 190340, 334630, 669260, 1037353, 2074706, 4149412, 5186765, 10373530, 20747060]

約数ペア:

[(1, 20747060), (2, 10373530), (4, 5186765), (5, 4149412), (10, 2074706), (20, 1037353), (31, 669260), (62, 334630), (109, 190340), (124, 167315), (155, 133852), (218, 95170), (307, 67580), (310, 66926), (436, 47585), (545, 38068), (614, 33790), (620, 33463), (1090, 19034), (1228, 16895), (1535, 13516), (2180, 9517), (3070, 6758), (3379, 6140)]