18759916

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 21156884

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 179, 197, 266, 358, 394, 532, 716, 788, 1253, 1379, 2506, 2758, 3401, 3743, 5012, 5516, 6802, 7486, 13604, 14972, 23807, 26201, 35263, 47614, 52402, 70526, 95228, 104804, 141052, 246841, 493682, 669997, 987364, 1339994, 2679988, 4689979, 9379958, 18759916]

約数ペア:

[(1, 18759916), (2, 9379958), (4, 4689979), (7, 2679988), (14, 1339994), (19, 987364), (28, 669997), (38, 493682), (76, 246841), (133, 141052), (179, 104804), (197, 95228), (266, 70526), (358, 52402), (394, 47614), (532, 35263), (716, 26201), (788, 23807), (1253, 14972), (1379, 13604), (2506, 7486), (2758, 6802), (3401, 5516), (3743, 5012)]