21790131

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1511}}^1$

素因数の和:1567

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13046349

約数列:

[1, 3, 11, 19, 23, 33, 57, 69, 209, 253, 437, 627, 759, 1311, 1511, 4533, 4807, 14421, 16621, 28709, 34753, 49863, 86127, 104259, 315799, 382283, 660307, 947397, 1146849, 1980921, 7263377, 21790131]

約数ペア:

[(1, 21790131), (3, 7263377), (11, 1980921), (19, 1146849), (23, 947397), (33, 660307), (57, 382283), (69, 315799), (209, 104259), (253, 86127), (437, 49863), (627, 34753), (759, 28709), (1311, 16621), (1511, 14421), (4533, 4807)]