20659135

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 30878496

約数和(自身を除く): 10219361

約数列:

[1, 5, 7, 35, 37, 43, 49, 53, 185, 215, 245, 259, 265, 301, 371, 1295, 1505, 1591, 1813, 1855, 1961, 2107, 2279, 2597, 7955, 9065, 9805, 10535, 11137, 11395, 12985, 13727, 15953, 55685, 68635, 77959, 79765, 84323, 96089, 111671, 389795, 421615, 480445, 558355, 590261, 2951305, 4131827, 20659135]

約数ペア:

[(1, 20659135), (5, 4131827), (7, 2951305), (35, 590261), (37, 558355), (43, 480445), (49, 421615), (53, 389795), (185, 111671), (215, 96089), (245, 84323), (259, 79765), (265, 77959), (301, 68635), (371, 55685), (1295, 15953), (1505, 13727), (1591, 12985), (1813, 11395), (1855, 11137), (1961, 10535), (2107, 9805), (2279, 9065), (2597, 7955)]