20813648

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1447}}^1$

素因数の和:1515

約数の個数: 40

約数和(自身を含む): 43092480

約数和(自身を除く): 22278832

約数列:

[1, 2, 4, 8, 16, 29, 31, 58, 62, 116, 124, 232, 248, 464, 496, 899, 1447, 1798, 2894, 3596, 5788, 7192, 11576, 14384, 23152, 41963, 44857, 83926, 89714, 167852, 179428, 335704, 358856, 671408, 717712, 1300853, 2601706, 5203412, 10406824, 20813648]

約数ペア:

[(1, 20813648), (2, 10406824), (4, 5203412), (8, 2601706), (16, 1300853), (29, 717712), (31, 671408), (58, 358856), (62, 335704), (116, 179428), (124, 167852), (232, 89714), (248, 83926), (464, 44857), (496, 41963), (899, 23152), (1447, 14384), (1798, 11576), (2894, 7192), (3596, 5788)]