21998972

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1619}}^1$

素因数の和:1745

約数の個数: 24

約数和(自身を含む): 39916800

約数和(自身を除く): 17917828

約数列:

[1, 2, 4, 43, 79, 86, 158, 172, 316, 1619, 3238, 3397, 6476, 6794, 13588, 69617, 127901, 139234, 255802, 278468, 511604, 5499743, 10999486, 21998972]

約数ペア:

[(1, 21998972), (2, 10999486), (4, 5499743), (43, 511604), (79, 278468), (86, 255802), (158, 139234), (172, 127901), (316, 69617), (1619, 13588), (3238, 6794), (3397, 6476)]