214317820

素因数分解:

$2^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{5393}}^1$

素因数の和:7389

約数の個数: 24

約数和(自身を含む): 450377424

約数和(自身を除く): 236059604

約数列:

[1, 2, 4, 5, 10, 20, 1987, 3974, 5393, 7948, 9935, 10786, 19870, 21572, 26965, 39740, 53930, 107860, 10715891, 21431782, 42863564, 53579455, 107158910, 214317820]

約数ペア:

[(1, 214317820), (2, 107158910), (4, 53579455), (5, 42863564), (10, 21431782), (20, 10715891), (1987, 107860), (3974, 53930), (5393, 39740), (7948, 26965), (9935, 21572), (10786, 19870)]