21554163

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{269}}^1\times {\mathrm{307}}^1$

素因数の和:611

約数の個数: 24

約数和(自身を含む): 32432400

約数和(自身を除く): 10878237

約数列:

[1, 3, 9, 29, 87, 261, 269, 307, 807, 921, 2421, 2763, 7801, 8903, 23403, 26709, 70209, 80127, 82583, 247749, 743247, 2394907, 7184721, 21554163]

約数ペア:

[(1, 21554163), (3, 7184721), (9, 2394907), (29, 743247), (87, 247749), (261, 82583), (269, 80127), (307, 70209), (807, 26709), (921, 23403), (2421, 8903), (2763, 7801)]