28511721

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{8539}}^1$

素因数の和:8605

約数の個数: 24

約数和(自身を含む): 47960640

約数和(自身を除く): 19448919

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 8539, 25617, 59773, 76851, 179319, 452567, 537957, 1357701, 3167969, 4073103, 9503907, 28511721]

約数ペア:

[(1, 28511721), (3, 9503907), (7, 4073103), (9, 3167969), (21, 1357701), (53, 537957), (63, 452567), (159, 179319), (371, 76851), (477, 59773), (1113, 25617), (3339, 8539)]