21625552

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103969}}^1$

素因数の和:103990

約数の個数: 20

約数和(自身を含む): 45122980

約数和(自身を除く): 23497428

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103969, 207938, 415876, 831752, 1351597, 1663504, 2703194, 5406388, 10812776, 21625552]

約数ペア:

[(1, 21625552), (2, 10812776), (4, 5406388), (8, 2703194), (13, 1663504), (16, 1351597), (26, 831752), (52, 415876), (104, 207938), (208, 103969)]