21105978

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{2141}}^1$

素因数の和:2230

約数の個数: 32

約数和(自身を含む): 44416512

約数和(自身を除く): 23310534

約数列:

[1, 2, 3, 6, 31, 53, 62, 93, 106, 159, 186, 318, 1643, 2141, 3286, 4282, 4929, 6423, 9858, 12846, 66371, 113473, 132742, 199113, 226946, 340419, 398226, 680838, 3517663, 7035326, 10552989, 21105978]

約数ペア:

[(1, 21105978), (2, 10552989), (3, 7035326), (6, 3517663), (31, 680838), (53, 398226), (62, 340419), (93, 226946), (106, 199113), (159, 132742), (186, 113473), (318, 66371), (1643, 12846), (2141, 9858), (3286, 6423), (4282, 4929)]