28784931

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 45416448

約数和(自身を除く): 16631517

約数列:

[1, 3, 7, 21, 43, 127, 129, 251, 301, 381, 753, 889, 903, 1757, 2667, 5271, 5461, 10793, 16383, 31877, 32379, 38227, 75551, 95631, 114681, 223139, 226653, 669417, 1370711, 4112133, 9594977, 28784931]

約数ペア:

[(1, 28784931), (3, 9594977), (7, 4112133), (21, 1370711), (43, 669417), (127, 226653), (129, 223139), (251, 114681), (301, 95631), (381, 75551), (753, 38227), (889, 32379), (903, 31877), (1757, 16383), (2667, 10793), (5271, 5461)]