20806976

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:343

約数の個数: 56

約数和(自身を含む): 44256960

約数和(自身を除く): 23449984

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 71, 76, 142, 152, 241, 284, 304, 482, 568, 608, 964, 1136, 1216, 1349, 1928, 2272, 2698, 3856, 4544, 4579, 5396, 7712, 9158, 10792, 15424, 17111, 18316, 21584, 34222, 36632, 43168, 68444, 73264, 86336, 136888, 146528, 273776, 293056, 325109, 547552, 650218, 1095104, 1300436, 2600872, 5201744, 10403488, 20806976]

約数ペア:

[(1, 20806976), (2, 10403488), (4, 5201744), (8, 2600872), (16, 1300436), (19, 1095104), (32, 650218), (38, 547552), (64, 325109), (71, 293056), (76, 273776), (142, 146528), (152, 136888), (241, 86336), (284, 73264), (304, 68444), (482, 43168), (568, 36632), (608, 34222), (964, 21584), (1136, 18316), (1216, 17111), (1349, 15424), (1928, 10792), (2272, 9158), (2698, 7712), (3856, 5396), (4544, 4579)]