218658519

素因数分解:

$3^2\times {\mathrm{131}}^1\times {\mathrm{191}}^1\times {\mathrm{971}}^1$

素因数の和:1299

約数の個数: 24

約数和(自身を含む): 320246784

約数和(自身を除く): 101588265

約数列:

[1, 3, 9, 131, 191, 393, 573, 971, 1179, 1719, 2913, 8739, 25021, 75063, 127201, 185461, 225189, 381603, 556383, 1144809, 1669149, 24295391, 72886173, 218658519]

約数ペア:

[(1, 218658519), (3, 72886173), (9, 24295391), (131, 1669149), (191, 1144809), (393, 556383), (573, 381603), (971, 225189), (1179, 185461), (1719, 127201), (2913, 75063), (8739, 25021)]