28031787

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{9467}}^1$

素因数の和:9527

約数の個数: 24

約数和(自身を含む): 47264256

約数和(自身を除く): 19232469

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 9467, 28401, 66269, 85203, 198807, 444949, 596421, 1334847, 3114643, 4004541, 9343929, 28031787]

約数ペア:

[(1, 28031787), (3, 9343929), (7, 4004541), (9, 3114643), (21, 1334847), (47, 596421), (63, 444949), (141, 198807), (329, 85203), (423, 66269), (987, 28401), (2961, 9467)]