21155456

素因数分解:

$2^7\times 7^2\times {\mathrm{3373}}^1$

素因数の和:3401

約数の個数: 48

約数和(自身を含む): 49041090

約数和(自身を除く): 27885634

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 392, 448, 784, 896, 1568, 3136, 3373, 6272, 6746, 13492, 23611, 26984, 47222, 53968, 94444, 107936, 165277, 188888, 215872, 330554, 377776, 431744, 661108, 755552, 1322216, 1511104, 2644432, 3022208, 5288864, 10577728, 21155456]

約数ペア:

[(1, 21155456), (2, 10577728), (4, 5288864), (7, 3022208), (8, 2644432), (14, 1511104), (16, 1322216), (28, 755552), (32, 661108), (49, 431744), (56, 377776), (64, 330554), (98, 215872), (112, 188888), (128, 165277), (196, 107936), (224, 94444), (392, 53968), (448, 47222), (784, 26984), (896, 23611), (1568, 13492), (3136, 6746), (3373, 6272)]