16972780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{431}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 39191040

約数和(自身を除く): 22218260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 220, 358, 431, 716, 862, 895, 1724, 1790, 1969, 2155, 3580, 3938, 4310, 4741, 7876, 8620, 9482, 9845, 18964, 19690, 23705, 39380, 47410, 77149, 94820, 154298, 308596, 385745, 771490, 848639, 1542980, 1697278, 3394556, 4243195, 8486390, 16972780]

約数ペア:

[(1, 16972780), (2, 8486390), (4, 4243195), (5, 3394556), (10, 1697278), (11, 1542980), (20, 848639), (22, 771490), (44, 385745), (55, 308596), (110, 154298), (179, 94820), (220, 77149), (358, 47410), (431, 39380), (716, 23705), (862, 19690), (895, 18964), (1724, 9845), (1790, 9482), (1969, 8620), (2155, 7876), (3580, 4741), (3938, 4310)]