20991384

素因数分解:

$2^3\times 3^2\times {\mathrm{291547}}^1$

素因数の和:291559

約数の個数: 24

約数和(自身を含む): 56851860

約数和(自身を除く): 35860476

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 291547, 583094, 874641, 1166188, 1749282, 2332376, 2623923, 3498564, 5247846, 6997128, 10495692, 20991384]

約数ペア:

[(1, 20991384), (2, 10495692), (3, 6997128), (4, 5247846), (6, 3498564), (8, 2623923), (9, 2332376), (12, 1749282), (18, 1166188), (24, 874641), (36, 583094), (72, 291547)]