20728168

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{881}}^1$

素因数の和:1077

約数の個数: 32

約数和(自身を含む): 41436360

約数和(自身を除く): 20708192

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 173, 346, 692, 881, 1384, 1762, 2941, 3524, 5882, 7048, 11764, 14977, 23528, 29954, 59908, 119816, 152413, 304826, 609652, 1219304, 2591021, 5182042, 10364084, 20728168]

約数ペア:

[(1, 20728168), (2, 10364084), (4, 5182042), (8, 2591021), (17, 1219304), (34, 609652), (68, 304826), (136, 152413), (173, 119816), (346, 59908), (692, 29954), (881, 23528), (1384, 14977), (1762, 11764), (2941, 7048), (3524, 5882)]