19855616

素因数分解:

$2^8\times {\mathrm{11}}^2\times {\mathrm{641}}^1$

素因数の和:679

約数の個数: 54

約数和(自身を含む): 43632246

約数和(自身を除く): 23776630

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 121, 128, 176, 242, 256, 352, 484, 641, 704, 968, 1282, 1408, 1936, 2564, 2816, 3872, 5128, 7051, 7744, 10256, 14102, 15488, 20512, 28204, 30976, 41024, 56408, 77561, 82048, 112816, 155122, 164096, 225632, 310244, 451264, 620488, 902528, 1240976, 1805056, 2481952, 4963904, 9927808, 19855616]

約数ペア:

[(1, 19855616), (2, 9927808), (4, 4963904), (8, 2481952), (11, 1805056), (16, 1240976), (22, 902528), (32, 620488), (44, 451264), (64, 310244), (88, 225632), (121, 164096), (128, 155122), (176, 112816), (242, 82048), (256, 77561), (352, 56408), (484, 41024), (641, 30976), (704, 28204), (968, 20512), (1282, 15488), (1408, 14102), (1936, 10256), (2564, 7744), (2816, 7051), (3872, 5128)]