21249808

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1117}}^1$

素因数の和:1195

約数の個数: 40

約数和(自身を含む): 43669080

約数和(自身を除く): 22419272

約数列:

[1, 2, 4, 8, 16, 29, 41, 58, 82, 116, 164, 232, 328, 464, 656, 1117, 1189, 2234, 2378, 4468, 4756, 8936, 9512, 17872, 19024, 32393, 45797, 64786, 91594, 129572, 183188, 259144, 366376, 518288, 732752, 1328113, 2656226, 5312452, 10624904, 21249808]

約数ペア:

[(1, 21249808), (2, 10624904), (4, 5312452), (8, 2656226), (16, 1328113), (29, 732752), (41, 518288), (58, 366376), (82, 259144), (116, 183188), (164, 129572), (232, 91594), (328, 64786), (464, 45797), (656, 32393), (1117, 19024), (1189, 17872), (2234, 9512), (2378, 8936), (4468, 4756)]