21639184

素因数分解:

$2^4\times 7^3\times {\mathrm{3943}}^1$

素因数の和:3972

約数の個数: 40

約数和(自身を含む): 48905600

約数和(自身を除く): 27266416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2744, 3943, 5488, 7886, 15772, 27601, 31544, 55202, 63088, 110404, 193207, 220808, 386414, 441616, 772828, 1352449, 1545656, 2704898, 3091312, 5409796, 10819592, 21639184]

約数ペア:

[(1, 21639184), (2, 10819592), (4, 5409796), (7, 3091312), (8, 2704898), (14, 1545656), (16, 1352449), (28, 772828), (49, 441616), (56, 386414), (98, 220808), (112, 193207), (196, 110404), (343, 63088), (392, 55202), (686, 31544), (784, 27601), (1372, 15772), (2744, 7886), (3943, 5488)]