257088640

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3163}}^1$

素因数の和:3309

約数の個数: 64

約数和(自身を含む): 619637760

約数和(自身を除く): 362549120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 508, 635, 640, 1016, 1270, 2032, 2540, 3163, 4064, 5080, 6326, 8128, 10160, 12652, 15815, 16256, 20320, 25304, 31630, 40640, 50608, 63260, 81280, 101216, 126520, 202432, 253040, 401701, 404864, 506080, 803402, 1012160, 1606804, 2008505, 2024320, 3213608, 4017010, 6427216, 8034020, 12854432, 16068040, 25708864, 32136080, 51417728, 64272160, 128544320, 257088640]

約数ペア:

[(1, 257088640), (2, 128544320), (4, 64272160), (5, 51417728), (8, 32136080), (10, 25708864), (16, 16068040), (20, 12854432), (32, 8034020), (40, 6427216), (64, 4017010), (80, 3213608), (127, 2024320), (128, 2008505), (160, 1606804), (254, 1012160), (320, 803402), (508, 506080), (635, 404864), (640, 401701), (1016, 253040), (1270, 202432), (2032, 126520), (2540, 101216), (3163, 81280), (4064, 63260), (5080, 50608), (6326, 40640), (8128, 31630), (10160, 25304), (12652, 20320), (15815, 16256)]