221245257

素因数分解:

$3^1\times {\mathrm{23}}^2\times {\mathrm{109}}^1\times {\mathrm{1279}}^1$

素因数の和:1437

約数の個数: 24

約数和(自身を含む): 311449600

約数和(自身を除く): 90204343

約数列:

[1, 3, 23, 69, 109, 327, 529, 1279, 1587, 2507, 3837, 7521, 29417, 57661, 88251, 139411, 172983, 418233, 676591, 2029773, 3206453, 9619359, 73748419, 221245257]

約数ペア:

[(1, 221245257), (3, 73748419), (23, 9619359), (69, 3206453), (109, 2029773), (327, 676591), (529, 418233), (1279, 172983), (1587, 139411), (2507, 88251), (3837, 57661), (7521, 29417)]