80208520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{286459}}^1$

素因数の和:286477

約数の個数: 32

約数和(自身を含む): 206251200

約数和(自身を除く): 126042680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 286459, 572918, 1145836, 1432295, 2005213, 2291672, 2864590, 4010426, 5729180, 8020852, 10026065, 11458360, 16041704, 20052130, 40104260, 80208520]

約数ペア:

[(1, 80208520), (2, 40104260), (4, 20052130), (5, 16041704), (7, 11458360), (8, 10026065), (10, 8020852), (14, 5729180), (20, 4010426), (28, 2864590), (35, 2291672), (40, 2005213), (56, 1432295), (70, 1145836), (140, 572918), (280, 286459)]