28372491

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7901}}^1$

素因数の和:7936

約数の個数: 32

約数和(自身を含む): 50572800

約数和(自身を除く): 22200309

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 399, 513, 1197, 3591, 7901, 23703, 55307, 71109, 150119, 165921, 213327, 450357, 497763, 1050833, 1351071, 1493289, 3152499, 4053213, 9457497, 28372491]

約数ペア:

[(1, 28372491), (3, 9457497), (7, 4053213), (9, 3152499), (19, 1493289), (21, 1351071), (27, 1050833), (57, 497763), (63, 450357), (133, 213327), (171, 165921), (189, 150119), (399, 71109), (513, 55307), (1197, 23703), (3591, 7901)]