20315956

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{239}}^1\times {\mathrm{269}}^1$

素因数の和:591

約数の個数: 24

約数和(自身を含む): 36288000

約数和(自身を除く): 15972044

約数列:

[1, 2, 4, 79, 158, 239, 269, 316, 478, 538, 956, 1076, 18881, 21251, 37762, 42502, 64291, 75524, 85004, 128582, 257164, 5078989, 10157978, 20315956]

約数ペア:

[(1, 20315956), (2, 10157978), (4, 5078989), (79, 257164), (158, 128582), (239, 85004), (269, 75524), (316, 64291), (478, 42502), (538, 37762), (956, 21251), (1076, 18881)]