20502976

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1297}}^1$

素因数の和:1341

約数の個数: 56

約数和(自身を含む): 46156880

約数和(自身を除く): 25653904

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 152, 208, 247, 304, 416, 494, 608, 832, 988, 1216, 1297, 1976, 2594, 3952, 5188, 7904, 10376, 15808, 16861, 20752, 24643, 33722, 41504, 49286, 67444, 83008, 98572, 134888, 197144, 269776, 320359, 394288, 539552, 640718, 788576, 1079104, 1281436, 1577152, 2562872, 5125744, 10251488, 20502976]

約数ペア:

[(1, 20502976), (2, 10251488), (4, 5125744), (8, 2562872), (13, 1577152), (16, 1281436), (19, 1079104), (26, 788576), (32, 640718), (38, 539552), (52, 394288), (64, 320359), (76, 269776), (104, 197144), (152, 134888), (208, 98572), (247, 83008), (304, 67444), (416, 49286), (494, 41504), (608, 33722), (832, 24643), (988, 20752), (1216, 16861), (1297, 15808), (1976, 10376), (2594, 7904), (3952, 5188)]