21971163

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 10169637

約数列:

[1, 3, 19, 57, 61, 71, 89, 183, 213, 267, 1159, 1349, 1691, 3477, 4047, 4331, 5073, 5429, 6319, 12993, 16287, 18957, 82289, 103151, 120061, 246867, 309453, 360183, 385459, 1156377, 7323721, 21971163]

約数ペア:

[(1, 21971163), (3, 7323721), (19, 1156377), (57, 385459), (61, 360183), (71, 309453), (89, 246867), (183, 120061), (213, 103151), (267, 82289), (1159, 18957), (1349, 16287), (1691, 12993), (3477, 6319), (4047, 5429), (4331, 5073)]