21212265

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{283}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 35988480

約数和(自身を除く): 14776215

約数列:

[1, 3, 5, 15, 19, 57, 95, 263, 283, 285, 789, 849, 1315, 1415, 3945, 4245, 4997, 5377, 14991, 16131, 24985, 26885, 74429, 74955, 80655, 223287, 372145, 1116435, 1414151, 4242453, 7070755, 21212265]

約数ペア:

[(1, 21212265), (3, 7070755), (5, 4242453), (15, 1414151), (19, 1116435), (57, 372145), (95, 223287), (263, 80655), (283, 74955), (285, 74429), (789, 26885), (849, 24985), (1315, 16131), (1415, 14991), (3945, 5377), (4245, 4997)]