21008661

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{6247}}^1$

素因数の和:6328

約数の個数: 16

約数和(自身を含む): 29990400

約数和(自身を除く): 8981739

約数列:

[1, 3, 19, 57, 59, 177, 1121, 3363, 6247, 18741, 118693, 356079, 368573, 1105719, 7002887, 21008661]

約数ペア:

[(1, 21008661), (3, 7002887), (19, 1105719), (57, 368573), (59, 356079), (177, 118693), (1121, 18741), (3363, 6247)]