287679

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:139

約数の個数: 24

約数和(自身を含む): 474240

約数和(自身を除く): 186561

約数列:

[1, 3, 7, 19, 21, 49, 57, 103, 133, 147, 309, 399, 721, 931, 1957, 2163, 2793, 5047, 5871, 13699, 15141, 41097, 95893, 287679]

約数ペア:

[(1, 287679), (3, 95893), (7, 41097), (19, 15141), (21, 13699), (49, 5871), (57, 5047), (103, 2793), (133, 2163), (147, 1957), (309, 931), (399, 721)]