28389417

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 44774400

約数和(自身を除く): 16384983

約数列:

[1, 3, 7, 21, 43, 129, 149, 211, 301, 447, 633, 903, 1043, 1477, 3129, 4431, 6407, 9073, 19221, 27219, 31439, 44849, 63511, 94317, 134547, 190533, 220073, 660219, 1351877, 4055631, 9463139, 28389417]

約数ペア:

[(1, 28389417), (3, 9463139), (7, 4055631), (21, 1351877), (43, 660219), (129, 220073), (149, 190533), (211, 134547), (301, 94317), (447, 63511), (633, 44849), (903, 31439), (1043, 27219), (1477, 19221), (3129, 9073), (4431, 6407)]