20197988

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{8573}}^1$

素因数の和:8627

約数の個数: 24

約数和(自身を含む): 38411520

約数和(自身を除く): 18213532

約数列:

[1, 2, 4, 19, 31, 38, 62, 76, 124, 589, 1178, 2356, 8573, 17146, 34292, 162887, 265763, 325774, 531526, 651548, 1063052, 5049497, 10098994, 20197988]

約数ペア:

[(1, 20197988), (2, 10098994), (4, 5049497), (19, 1063052), (31, 651548), (38, 531526), (62, 325774), (76, 265763), (124, 162887), (589, 34292), (1178, 17146), (2356, 8573)]