21956115

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1879}}^1$

素因数の和:1947

約数の個数: 32

約数和(自身を含む): 37900800

約数和(自身を除く): 15944685

約数列:

[1, 3, 5, 15, 19, 41, 57, 95, 123, 205, 285, 615, 779, 1879, 2337, 3895, 5637, 9395, 11685, 28185, 35701, 77039, 107103, 178505, 231117, 385195, 535515, 1155585, 1463741, 4391223, 7318705, 21956115]

約数ペア:

[(1, 21956115), (3, 7318705), (5, 4391223), (15, 1463741), (19, 1155585), (41, 535515), (57, 385195), (95, 231117), (123, 178505), (205, 107103), (285, 77039), (615, 35701), (779, 28185), (1879, 11685), (2337, 9395), (3895, 5637)]