2008205840

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1\times {\mathrm{569}}^1$

素因数の和:1020

約数の個数: 80

約数和(自身を含む): 4723827120

約数和(自身を除く): 2715621280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 281, 314, 562, 569, 628, 785, 1124, 1138, 1256, 1405, 1570, 2248, 2276, 2512, 2810, 2845, 3140, 4496, 4552, 5620, 5690, 6280, 9104, 11240, 11380, 12560, 22480, 22760, 44117, 45520, 88234, 89333, 159889, 176468, 178666, 220585, 319778, 352936, 357332, 441170, 446665, 639556, 705872, 714664, 799445, 882340, 893330, 1279112, 1429328, 1598890, 1764680, 1786660, 2558224, 3197780, 3529360, 3573320, 6395560, 7146640, 12791120, 25102573, 50205146, 100410292, 125512865, 200820584, 251025730, 401641168, 502051460, 1004102920, 2008205840]

約数ペア:

[(1, 2008205840), (2, 1004102920), (4, 502051460), (5, 401641168), (8, 251025730), (10, 200820584), (16, 125512865), (20, 100410292), (40, 50205146), (80, 25102573), (157, 12791120), (281, 7146640), (314, 6395560), (562, 3573320), (569, 3529360), (628, 3197780), (785, 2558224), (1124, 1786660), (1138, 1764680), (1256, 1598890), (1405, 1429328), (1570, 1279112), (2248, 893330), (2276, 882340), (2512, 799445), (2810, 714664), (2845, 705872), (3140, 639556), (4496, 446665), (4552, 441170), (5620, 357332), (5690, 352936), (6280, 319778), (9104, 220585), (11240, 178666), (11380, 176468), (12560, 159889), (22480, 89333), (22760, 88234), (44117, 45520)]