21179319

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7583}}^1$

素因数の和:7619

約数の個数: 24

約数和(自身を含む): 34583040

約数和(自身を除く): 13403721

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7583, 22749, 53081, 144077, 159243, 371567, 432231, 1008539, 1114701, 3025617, 7059773, 21179319]

約数ペア:

[(1, 21179319), (3, 7059773), (7, 3025617), (19, 1114701), (21, 1008539), (49, 432231), (57, 371567), (133, 159243), (147, 144077), (399, 53081), (931, 22749), (2793, 7583)]