20687384

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{503}}^1$

素因数の和:659

約数の個数: 32

約数和(自身を含む): 40007520

約数和(自身を除く): 19320136

約数列:

[1, 2, 4, 8, 53, 97, 106, 194, 212, 388, 424, 503, 776, 1006, 2012, 4024, 5141, 10282, 20564, 26659, 41128, 48791, 53318, 97582, 106636, 195164, 213272, 390328, 2585923, 5171846, 10343692, 20687384]

約数ペア:

[(1, 20687384), (2, 10343692), (4, 5171846), (8, 2585923), (53, 390328), (97, 213272), (106, 195164), (194, 106636), (212, 97582), (388, 53318), (424, 48791), (503, 41128), (776, 26659), (1006, 20564), (2012, 10282), (4024, 5141)]