21662128

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71257}}^1$

素因数の和:71284

約数の個数: 20

約数和(自身を含む): 44179960

約数和(自身を除く): 22517832

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71257, 142514, 285028, 570056, 1140112, 1353883, 2707766, 5415532, 10831064, 21662128]

約数ペア:

[(1, 21662128), (2, 10831064), (4, 5415532), (8, 2707766), (16, 1353883), (19, 1140112), (38, 570056), (76, 285028), (152, 142514), (304, 71257)]