28686903

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{10271}}^1$

素因数の和:10307

約数の個数: 24

約数和(自身を含む): 46840320

約数和(自身を除く): 18153417

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 10271, 30813, 71897, 195149, 215691, 503279, 585447, 1366043, 1509837, 4098129, 9562301, 28686903]

約数ペア:

[(1, 28686903), (3, 9562301), (7, 4098129), (19, 1509837), (21, 1366043), (49, 585447), (57, 503279), (133, 215691), (147, 195149), (399, 71897), (931, 30813), (2793, 10271)]