19972743

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7151}}^1$

素因数の和:7187

約数の個数: 24

約数和(自身を含む): 32613120

約数和(自身を除く): 12640377

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7151, 21453, 50057, 135869, 150171, 350399, 407607, 951083, 1051197, 2853249, 6657581, 19972743]

約数ペア:

[(1, 19972743), (3, 6657581), (7, 2853249), (19, 1051197), (21, 951083), (49, 407607), (57, 350399), (133, 150171), (147, 135869), (399, 50057), (931, 21453), (2793, 7151)]