221497688

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{281}}^1\times {\mathrm{2663}}^1$

素因数の和:2987

約数の個数: 32

約数和(自身を含む): 428211360

約数和(自身を除く): 206713672

約数列:

[1, 2, 4, 8, 37, 74, 148, 281, 296, 562, 1124, 2248, 2663, 5326, 10397, 10652, 20794, 21304, 41588, 83176, 98531, 197062, 394124, 748303, 788248, 1496606, 2993212, 5986424, 27687211, 55374422, 110748844, 221497688]

約数ペア:

[(1, 221497688), (2, 110748844), (4, 55374422), (8, 27687211), (37, 5986424), (74, 2993212), (148, 1496606), (281, 788248), (296, 748303), (562, 394124), (1124, 197062), (2248, 98531), (2663, 83176), (5326, 41588), (10397, 21304), (10652, 20794)]